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Term 1: Term 2:

(=>
    (and
        (equal ?W
            (OrganicObjectFn ?S))
        (subclass ?W BirchWood)
        (subclass ?S PlantStem))
    (initialPart ?S BirchTree))		 Economy.kif 5316-5321
(subclass BirchWood Hardwood) Economy.kif 5313-5313


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