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<!--2023-07-11 14.05.22-->
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        <link:definition>JA: Schedule: Cash and Cash Equivalents, by Component</link:definition>
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        <link:definition>KA: Schedule: Property, Plant and Equipment, Net, by Component (Represented as Line Items/Concepts)</link:definition>
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        <link:definition>KC: Schedule: Property, Plant and Equipment, Estimated Useful Lives (Represented as Axis/Members)</link:definition>
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      <link:roleType roleURI="http://luca.auditchain.finance/report/role/DebtDetails" id="DebtDetails">
        <link:definition>NB: Schedule: Long-Term Debt, by Component</link:definition>
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        <link:definition>NC: Schedule: Long-Term Debt, by Current and Noncurrent Portion</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>NF: Schedule: Other Liabilities, by Current and Noncurrent Portion</link:definition>
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        <link:definition>NG: Schedule: Income Tax Expense (Benefit), by Component</link:definition>
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        <link:definition>OB1: Schedule: Business Segments, by Segment (BS)</link:definition>
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        <link:definition>OB2: Schedule: Business Segments, by Segment (IS)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>OB3: Schedule: Business Segments, by Segment (OT)</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>OC: Schedule: Related Parties, by Party</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://luca.auditchain.finance/report/role/RelatedPartyTransactionsSchedule" id="RelatedPartyTransactionsSchedule">
        <link:definition>OD: Schedule: Related Party Transactions, by Transaction</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://luca.auditchain.finance/report/role/DirectorCompensationSchedule" id="DirectorCompensationSchedule">
        <link:definition>OE: Schedule: Director Compensation, by Director</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>OF: Schedule: Share Ownership Plans, by Plan</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://luca.auditchain.finance/report/role/PortfolioOfInvestmentsSchedule2" id="PortfolioOfInvestmentsSchedule2">
        <link:definition>OJ2: Schedule: Investments, by Instrument 2 Basic</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://luca.auditchain.finance/report/role/PortfolioOfInvestmentsSchedule" id="PortfolioOfInvestmentsSchedule">
        <link:definition>OJ: Schedule: Investments, by Instrument</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>OK: Schedule: Sales Analysis, by Customer</link:definition>
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        <link:definition>OL: Schedule: Document and Entity Information</link:definition>
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