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<!--  EDGAR Online I-Metrix Xcelerate Instance Document, based on XBRL 2.1  http://www.edgar-online.com/ -->
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  <dei:EntityRegistrantName contextRef="eol_0001104659-11-014131_STD_1_20110314_0">Grail Advisors ETF Trust</dei:EntityRegistrantName>
  <dei:DocumentCreationDate contextRef="eol_0001104659-11-014131_STD_1_20110314_0">2011-03-14</dei:DocumentCreationDate>
  <dei:DocumentEffectiveDate contextRef="eol_0001104659-11-014131_STD_1_20110314_0">2011-03-14</dei:DocumentEffectiveDate>
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  <rr:ProspectusDate contextRef="eol_0001104659-11-014131_STD_1_20110314_0">2011-03-14</rr:ProspectusDate>
  <rr:RiskNotInsuredDepositoryInstitution contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">An investment in the ETF is not a deposit in a bank and it is not guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other governmental agency.</rr:RiskNotInsuredDepositoryInstitution>
  <rr:ExpenseExampleHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">EXAMPLE</rr:ExpenseExampleHeading>
  <rr:ObjectiveHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">INVESTMENT OBJECTIVE</rr:ObjectiveHeading>
  <rr:PerformancePastDoesNotIndicateFuture contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">The ETF&apos;s past performance (before and after taxes) is not necessarily an indication of how the ETF will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
  <rr:RiskLoseMoney contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">The value of the ETF&apos;s holdings may decline, and the ETF&apos;s share price may go down.</rr:RiskLoseMoney>
  <rr:RiskHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">PRINCIPAL RISKS</rr:RiskHeading>
  <rr:ShareholderFeesCaption contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">SHAREHOLDER FEES (FEES PAID DIRECTLY FROM YOUR INVESTMENT)         None</rr:ShareholderFeesCaption>
  <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">2012-03-01</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
  <rr:PortfolioTurnoverRate contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215" unitRef="pure" decimals="2">0.92</rr:PortfolioTurnoverRate>
  <rr:BarChartAndPerformanceTableHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">PERFORMANCE</rr:BarChartAndPerformanceTableHeading>
  <rr:PerformanceInformationIllustratesVariabilityOfReturns contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">Because the ETF has not yet completed a calendar year of investment operations, performance information is not yet available.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
  <rr:StrategyNarrativeTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;The ETF invests, under normal circumstances, at least 80% of its net assets
(plus the amount of any borrowings for investment purposes) in debt securities
with interest payments exempt from federal income taxes. The ETF will typically
invest in municipal securities and will invest, under normal market conditions,
primarily in tax exempt general obligation, revenue and private activity bonds
and notes, which are issued by or on behalf of states, territories or
possessions of the U.S. and the District of Columbia and their political
subdivisions, agencies and instrumentalities (including Puerto Rico, the Virgin
Islands and Guam). Tax-exempt means that the bonds pay interest that is excluded
from gross income for regular federal income tax purposes, although interest
paid on municipal securities may be subject to the alternative minimum tax. The
ETF&apos;s investments generally include municipal securities with a full range of
maturities and broad issuer and geographic diversification. While the ETF may
invest in securities of any maturity, under normal circumstances, the
dollar-weighted average maturity of the portfolio is expected to range from
three to ten years.
 
McDonnell, as the ETF&apos;s sub-adviser, employs a total return investment strategy
which emphasizes sector and security selection and yield curve positioning.
Sector and security decisions are reached through robust fundamental credit
analysis as well as an assessment that incorporates the sector and security&apos;s
credit momentum. The total return strategy places a limited dependence on
adjusting the portfolio in anticipation of a change in the level of interest
rates.
 
The ETF invests primarily in investment grade securities, which are securities
rated in one of the top four credit quality categories by at least one
nationally recognized statistical rating organization rating that security (a
"rating agency"). The ETF considers pre-refunded bonds or escrowed to maturity
municipal securities, regardless of rating, to be investment grade securities.
The ETF may invest up to 20% of its net assets in high yield securities or below
investment-grade securities rated BB+ (or comparable) or below by a rating
agency or, if unrated, determined by McDonnell to be of comparable quality.
 
The ETF may invest up to 20% of its assets in taxable debt securities. These may
include securities issued by the U.S. Government, its agencies and
instrumentalities, corporate debt securities, mortgage-backed and other
asset-backed securities, and securities of other investment companies, including
other ETFs. The ETF may only invest in U.S. dollar-denominated securities.
 
Unless otherwise stated, all percentage limitations on ETF investments apply at
the time of investment.&lt;/pre&gt;</rr:StrategyNarrativeTextBlock>
  <rr:RiskReturnHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">FUND SUMMARY  GRAIL MCDONNELL INTERMEDIATE MUNICIPAL BOND ETF</rr:RiskReturnHeading>
  <rr:PortfolioTurnoverHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">PORTFOLIO TURNOVER</rr:PortfolioTurnoverHeading>
  <rr:RiskNarrativeTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;An investment in the ETF involves risk, including those described below. The
value of the ETF&apos;s holdings may decline, and the ETF&apos;s share price may go down.
 
Credit Risk. Credit risk is the risk that the inability or perceived inability
of an issuer to make interest and principal payments will cause the value of its
securities to decrease, and cause the ETF a loss. If an issuer&apos;s financial
health deteriorates, it may result in a reduction of the credit rating of the
issuer&apos;s securities and may lead to the issuer&apos;s inability to honor its
obligations, including making timely
payment of interest and principal. Although a downgrade of a bond&apos;s credit
ratings may not affect its price, a decline in credit quality may make bonds
less attractive, thereby increasing the yield on the bond and driving down the
price. Declines in credit quality can result in bankruptcy for the issuer and
permanent loss of investment.
 
The fixed income securities held by the ETF are subject to the risk that the
issuer will be unwilling or unable to satisfy its obligations to the ETF,
including the periodic payment of interest or the payment of principal upon
maturity.
 
Rating agencies are private services that provide ratings of the credit quality
of fixed income securities. Ratings assigned by a rating agency are not absolute
standards of credit quality and do not evaluate market risks. Rating agencies
may fail to make timely changes in credit ratings and an issuer&apos;s current
financial condition may be better or worse than a rating indicates. Further,
rating agencies may end coverage of a previously-rated security. The ETF will
not necessarily sell a security if its rating is reduced. The ETF&apos;s sub-adviser
does not rely solely on credit ratings, and develops its own analysis of issuer
credit quality. The ETF may purchase unrated securities (which are not rated by
a rating agency) if the sub-adviser determines that the security is of
comparable quality to a rated security that the ETF may purchase. Unrated
securities may be less liquid than comparable rated securities and involve the
risk that the sub-adviser may not accurately evaluate the security&apos;s comparative
credit rating.
 
ETF Risk. The Shares may trade above or below their NAV. The NAV of the ETF will
generally fluctuate with changes in the market value of the ETF&apos;s holdings. The
market prices of Shares, however, will generally fluctuate in accordance with
changes in NAV as well as the relative supply of, and demand for, Shares on the
Exchange. The trading price of Shares may deviate significantly from NAV during
periods of market volatility. The Manager cannot predict whether Shares will
trade below, at or above their NAV. Price differences may be due to the fact
that supply and demand forces at work in the secondary trading market for Shares
are closely related to, but not identical to, the same forces influencing the
prices of the securities held by the ETF. However, given that Shares can be
purchased and redeemed in Creation Units (unlike shares of closed-end funds,
which frequently trade at appreciable discounts from, and sometimes at premiums
to, their NAV), and the ETF&apos;s portfolio holdings are fully disclosed on a daily
basis, large discounts or premiums to the NAV of Shares should not be sustained.
 
Interest Rate Risk. Interest rate risk is the risk that fixed income securities
will decline in value because of changes in interest rates. Generally, the value
of debt securities falls as interest rates rise. Fixed income securities differ
in their sensitivities to changes in interest rates. Fixed income securities
with longer effective durations tend to be more sensitive to changes in interest
rates, usually making them more volatile than securities with shorter effective
durations. Effective duration is determined by a number of factors including
coupon rate, whether the coupon is fixed or floating, time to maturity, call or
put features, and various repayment features.
 
Liquidity Risk. Liquidity risk exists with respect to investments that are or
become difficult to sell. During periods of market turbulence or low trading
activity, in order to meet redemptions it may be necessary for the ETF to sell
securities at prices or times that are disadvantageous to the ETF. Additionally,
the market for certain investments may be or become illiquid independent of any
specific adverse changes in the conditions of a particular issuer. To the extent
the ETF uses derivatives or invests in lower-rated securities, it will tend to
have increased exposure to liquidity risk.
  
The ETF may invest in unregistered securities, including Rule 144A securities,
that are purchased directly from the issuer or in the secondary market and are
subject to limitations on resale. Limitations on resale may have an adverse
effect on the marketability of portfolio securities and the ETF might be unable
to dispose of restricted or other illiquid securities promptly or at reasonable
prices. The absence of a trading market can make it difficult to ascertain a
market value for illiquid investments.
 
Management Risk. Securities selected by McDonnell for the ETF may not perform as
expected. This could result in the ETF&apos;s underperformance compared to other
funds with similar investment objectives.
 
Market Risk. Market risk involves the possibility that the value of the ETF&apos;s
investments will decline, sometimes unpredictably or rapidly, due to drops in
the securities markets generally or particular industries represented in the
securities markets. The prices of and the income generated by securities held by
the ETF may decline in response to certain events, including those directly
involving the companies and governments whose securities are owned by the ETF,
general economic and market conditions, regional or global instability, and
interest rate fluctuations. Market turbulence in financial markets occurs from
time to time at various levels, and can be extreme, resulting in reduced
liquidity in credit and fixed income markets, which would likely have a
negatively affect on many issuers worldwide and an adverse effect on the ETF.
 
Mortgage-Related and Other Asset-Backed Securities Risk. Generally, rising
interest rates tend to extend the duration of fixed rate mortgage-related
securities, making them more sensitive to changes in interest rates. As a
result, in a period of rising interest rates, if the ETF holds mortgage-related
securities, it may exhibit additional volatility. In addition, adjustable and
fixed rate mortgage-related securities are subject to prepayment risk. When
interest rates decline, borrowers may repay their mortgages sooner than
expected. This can reduce the ETF&apos;s returns because the ETF may have to reinvest
that money at the lower prevailing interest rates. Conversely, when interest
rates rise, prepayments may happen more slowly, causing the underlying loans to
be outstanding for a longer time, which can cause the market value of the
security to fall because the market may view the interest rate as too low for a
longer-term investment. An ETF&apos;s investments in other asset-backed securities
are subject to similar risks and additional risks associated with the nature of
the assets and the servicing of those assets.
 
Municipal Securities Risk. Municipal securities are subject to interest rate,
credit and market risk. The ETF&apos;s investments in municipal securities will be
sensitive to events that affect municipal markets, including legislative or
political changes and the financial condition of the issuers of municipal
securities. The ETF will be more sensitive to a particular adverse economic,
business or political development if it invests a substantial portion of its
assets in the bonds of similar projects (such as those relating to education,
health care, housing, transportation or utilities), industrial development
bonds, or in bonds from issuers in a single state.
 
There is no guarantee that all of the ETF&apos;s income from municipal securities
will be exempt from federal or state income taxes. Income from municipal bonds
held by the ETF could be declared taxable due to unfavorable changes in tax
laws, adverse interpretations by the Internal Revenue Service or state tax
authorities, or noncompliant conduct of a bond issuer. Events occurring after
the date of issuance of a municipal bond or after the ETF&apos;s acquisition of a
municipal bond may result in a determination that interest on that bond is
includible in gross income for federal income tax purposes retroactively to its
date of issuance. Such a determination may cause a portion of prior
distributions
by the ETF to its shareholders to be taxable to those shareholders in the year
of receipt. Federal or state changes in income or alternative minimum tax rates
or in the tax treatment of municipal bonds may make municipal bonds less
attractive as investments and cause them to lose value.
 
Non-Investment Grade Securities Risk. Below investment-grade securities, or
"junk bonds," are more likely to pose a credit risk, as the issuers of these
securities are more likely to have problems making interest and principal
payments than issuers of higher-rated securities. Lower-rated securities may be
more susceptible to real or perceived adverse economic and competitive industry
conditions than higher-grade securities, and prices of these securities may be
more sensitive to adverse economic downturns or individual corporate
developments. If the issuer of the securities defaults, the ETF may incur
additional expenses to seek recovery. The secondary market in which below
investment-grade securities are traded may be less liquid than the market for
higher grade securities. Less liquidity in the secondary trading markets could
adversely affect the price at which the ETF could sell a particular security,
and could cause large fluctuations in the ETF&apos;s NAV. Adverse publicity and
investor perceptions may decrease the value and liquidity of lower-rated
securities.
 
Prepayment Risk. If interest rates fall, it is possible that issuers of certain
bonds will call, or prepay, their bonds before their maturity date. If a call
were exercised by the issuer during a period of declining interest rates, the
ETF would likely have to replace the called security with a lower yielding
security resulting in a decrease in the ETF&apos;s net investment income.
 
Trading Risk. Although the Shares are listed on the Exchange, there can be no
assurance that an active or liquid trading market for them will develop or be
maintained. In addition, trading in Shares on the Exchange may be halted due to
market conditions or for reasons that, in the view of the Exchange, make trading
in Shares inadvisable. Further, trading in Shares on the Exchange is subject to
trading halts caused by extraordinary market volatility pursuant to the Exchange
"circuit breaker" rules. There can be no assurance that the requirements of the
Exchange necessary to maintain the listing of the ETF will continue to be met or
will remain unchanged.
 
An investment in the ETF is not a deposit in a bank and it is not guaranteed by
the Federal Deposit Insurance Corporation (FDIC) or any other governmental
agency.&lt;/pre&gt;</rr:RiskNarrativeTextBlock>
  <rr:ExpenseHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">FEES AND EXPENSES</rr:ExpenseHeading>
  <rr:StrategyHeading contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">PRINCIPAL INVESTMENT STRATEGIES</rr:StrategyHeading>
  <rr:PerformanceAvailabilityWebSiteAddress contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">www.grailadvisors.com</rr:PerformanceAvailabilityWebSiteAddress>
  <rr:PerformanceNarrativeTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;Because the ETF has not yet completed a calendar year of investment operations,
performance information is not yet available. The ETF&apos;s past performance (before
and after taxes) is not necessarily an indication of how the ETF will perform in
the future. For current performance information, please visit
www.grailadvisors.com.&lt;/pre&gt;</rr:PerformanceNarrativeTextBlock>
  <rr:ExpenseNarrativeTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;This table describes the fees and expenses that you may pay if you buy and hold
Shares of the ETF.&lt;/pre&gt;</rr:ExpenseNarrativeTextBlock>
  <rr:AnnualFundOperatingExpensesTableTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;div style="display:none"&gt;~ http://www.grailadvisors.com/role/OperatingExpensesData_S000027156Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:AnnualFundOperatingExpensesTableTextBlock>
  <rr:OperatingExpensesCaption contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">ANNUAL FUND OPERATING EXPENSES (EXPENSES THAT YOU PAY EACH YEAR AS A PERCENTAGE OF THE VALUE OF YOUR INVESTMENT)</rr:OperatingExpensesCaption>
  <rr:PortfolioTurnoverTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;The ETF may pay transaction costs, including commissions when it buys and sells
securities (or "turns over" its portfolio). A higher portfolio turnover rate may
indicate higher transaction costs and may result in higher taxes when ETF shares
are held in a taxable account. These costs, which are not reflected
in annual fund operating expenses or in the example, affect the ETF&apos;s
performance. During the most recent fiscal year, the ETF&apos;s portfolio turnover
rate was 92% of the average value of its portfolio.&lt;/pre&gt;</rr:PortfolioTurnoverTextBlock>
  <rr:ExpenseExampleWithRedemptionTableTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;div style="display:none"&gt;~ http://www.grailadvisors.com/role/ExpenseExample_S000027156Member column dei_LegalEntityAxis compact * column rr_ProspectusShareClassAxis compact * row primary compact *  ~&lt;/div&gt;</rr:ExpenseExampleWithRedemptionTableTextBlock>
  <rr:ObjectivePrimaryTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;High level of current tax-exempt income and higher risk-adjusted returns
relative to its benchmark.&lt;/pre&gt;</rr:ObjectivePrimaryTextBlock>
  <rr:ExpenseExampleNarrativeTextBlock contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215">&lt;pre&gt;The following example is intended to help you compare the cost of investing in
the ETF with the cost of investing in other funds. The example assumes that you
invest $10,000 for the time periods indicated and then redeem all of your shares
at the end of those periods. The example also assumes that the ETF provides a
return of 5% a year, and that operating expenses remain the same. This example
does not reflect the brokerage commissions that you may pay to buy and sell
Shares. Although your actual costs may be higher or lower, based on these
assumptions your costs would be:&lt;/pre&gt;</rr:ExpenseExampleNarrativeTextBlock>
  <dei:TradingSymbol contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_396840x-9994215_429423x-9994225">GMMB</dei:TradingSymbol>
  <rr:FeeWaiverOrReimbursementOverAssets contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="pure" decimals="4" id="fnid_15648133_2_12">-0.0524</rr:FeeWaiverOrReimbursementOverAssets>
  <rr:ExpenseExampleYear10 contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="iso4217_USD" decimals="0">5163</rr:ExpenseExampleYear10>
  <rr:ExpenseExampleYear05 contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="iso4217_USD" decimals="0">2348</rr:ExpenseExampleYear05>
  <rr:OtherExpensesOverAssets contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="pure" decimals="4">0.0529</rr:OtherExpensesOverAssets>
  <rr:ManagementFeesOverAssets contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="pure" decimals="4">0.0030</rr:ManagementFeesOverAssets>
  <rr:ExpenseExampleYear01 contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="iso4217_USD" decimals="0">36</rr:ExpenseExampleYear01>
  <rr:ExpenseExampleYear03 contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="iso4217_USD" decimals="0">1199</rr:ExpenseExampleYear03>
  <rr:DistributionAndService12b1FeesOverAssets contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="pure" decimals="4">0.0000</rr:DistributionAndService12b1FeesOverAssets>
  <rr:NetExpensesOverAssets contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="pure" decimals="4">0.0035</rr:NetExpensesOverAssets>
  <rr:ExpensesOverAssets contextRef="eol_0001104659-11-014131_STD_1_20110314_0_396770x-9994220_429423x-9994225" unitRef="pure" decimals="4">0.0559</rr:ExpensesOverAssets>
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    <period>
      <startDate>2011-03-14</startDate>
      <endDate>2011-03-14</endDate>
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    <entity>
      <identifier scheme="http://www.sec.gov/CIK">0001415845</identifier>
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    <period>
      <startDate>2011-03-14</startDate>
      <endDate>2011-03-14</endDate>
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  <unit id="pure">
    <measure>pure</measure>
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  <unit id="iso4217_USD">
    <measure>iso4217:USD</measure>
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    <xbrll:footnote xlink:label="footnote_15648132" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">The Manager has contractually agreed to reduce its fees and/or reimburse ETF expenses (excluding interest, taxes, brokerage commissions, acquired fund fees and expenses, and extraordinary expenses) in order to limit Net Annual Operating Expenses for shares of the ETF to 0.35% of the ETF's average net assets ("Expense Cap"). The Expense Cap will remain in effect until at least March 1, 2012. The Expense Cap may be terminated earlier only upon the approval of the Board. The Manager may recoup fees reduced or expenses reimbursed at any time within three years from the year such expenses were incurred, so long as the repayment does not cause the Expense Cap to be exceeded.</xbrll:footnote>
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