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(:Test: op-subtract-dayTimeDuration-from-dateTime-13     :)
(:Written By: Carmelo Montanez                           :)
(:Date: July 1, 2005                                     :)
(:Purpose: Evaluates The "subtract-dayTimeDuration-from-dateTime" operator used  :)
(:together with the numeric-equal-operator "eq".         :)
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(xs:dateTime("1980-05-05T17:17:17Z") - xs:dayTimeDuration("P23DT11H11M")) eq xs:dateTime("1980-05-05T17:17:17Z")