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Term 1: Term 2:

(=>
    (and
        (equal ?W
            (OrganicObjectFn ?S))
        (subclass ?W PineWood)
        (subclass ?S PlantStem))
    (initialPart ?S PineTree))		 Economy.kif 5461-5466
(subclass PineTree Conifers) Geography.kif 6559-6559 松树 是 Conifers 的 subclass


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