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Sigma KEE - Surfboard
Surfboardsurfboard

appearance as argument number 1
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(documentation Surfboard EnglishLanguage "A narrow buoyant board for riding surf.") Sports.kif 176-176
(subclass Surfboard WaterBoard) Sports.kif 175-175 Surfboard is a subclass of water board

antecedent
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(=>
    (instance ?X Surfboard)
    (hasPurpose ?X
        (exists (?S)
            (and
                (instance ?S Surfing)
                (instrument ?S ?X)))))
Sports.kif 178-184


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