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Term 1: Term 2:

(=>
    (and
        (instance ?REL EconomicRelation)
        (domain ?REL 1 ?CLASS))
    (subclass ?CLASS GeopoliticalArea))
Mid-level-ontology.kif 16905-16909
(subclass EconomicRelation BinaryRelation) Mid-level-ontology.kif 16900-16900 子類 經濟關係 and BinaryRelation


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