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Term 1: Term 2:

(=>
    (and
        (domain ?REL ?NUMBER ?CLASS1)
        (domain ?REL ?NUMBER ?CLASS2))
    (or
        (subclass ?CLASS1 ?CLASS2)
        (subclass ?CLASS2 ?CLASS1)))
Merge.kif 249-255
(=>
    (and
        (instance ?REL EconomicRelation)
        (domain ?REL 1 ?CLASS))
    (subclass ?CLASS GeopoliticalArea))
Mid-level-ontology.kif 14460-14464
(domain subclass 1 SetOrClass) Merge.kif 141-141
(domain subclass 2 SetOrClass) Merge.kif 142-142


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