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Sigma KEE - QuarterYear
QuarterYear(quarter year)quarter

appearance as argument number 1
-------------------------


(documentation QuarterYear EnglishLanguage "A period of three months.") Merge.kif 8918-8918
(subclass QuarterYear TimeInterval) Merge.kif 8916-8916 Quarter year is a subclass of time interval

appearance as argument number 2
-------------------------


(rangeSubclass QuarterFn QuarterYear) Merge.kif 8899-8899 The values returned by quarter fn are subclasses of quarter year
(termFormat EnglishLanguage QuarterYear "quarter year") domainEnglishFormat.kif 65740-65740

antecedent
-------------------------


(=>
    (and
        (instance ?Q QuarterYear)
        (instance ?Q
            (QuarterFn ?N
                (YearFn ?Y)))
        (instance ?YI
            (YearFn ?Y)))
    (during ?Q ?YI))
Merge.kif 8909-8914
(=>
    (instance ?Q QuarterYear)
    (duration ?Q
        (MeasureFn 3 MonthDuration)))
Merge.kif 8920-8922


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