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Term 1: Term 2:

(=>
    (instance ?C ElectricalConductor)
    (exists (?S)
        (and
            (subclass ?S ConductorSubstance)
            (material ?S ?C))))
engineering.kif 820-825
(=>
    (instance ?COIN CurrencyCoin)
    (exists (?METAL)
        (and
            (subclass ?METAL Metal)
            (material ?METAL ?COIN))))
Mid-level-ontology.kif 4135-4140
(=>
    (instance ?I ResistorElement)
    (exists (?S)
        (and
            (subclass ?S InsulatorSubstance)
            (material ?S ?I))))
engineering.kif 849-854
(=>
    (instance ?OBJ CorpuscularObject)
    (exists (?SUBSTANCE1 ?SUBSTANCE2)
        (and
            (subclass ?SUBSTANCE1 Substance)
            (subclass ?SUBSTANCE2 Substance)
            (material ?SUBSTANCE1 ?OBJ)
            (material ?SUBSTANCE2 ?OBJ)
            (not
                (equal ?SUBSTANCE1 ?SUBSTANCE2)))))
Merge.kif 1928-1936
(=>
    (instance ?CF CharcoalFilter)
    (exists (?C)
        (and
            (subclass ?C Charcoal)
            (material ?C ?CF))))
Cars.kif 1683-1688


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