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Term 1: Term 2:

(=>
    (instance ?C ElectricalConductor)
    (exists (?S)
        (and
            (subclass ?S ConductorSubstance)
            (material ?S ?C))))
engineering.kif 1139-1144
(subclass ConductorSubstance Substance) engineering.kif 1594-1594 ConductorSubstance is a subclass of substance
(subclass Electrolyte ConductorSubstance) Cars.kif 2479-2479 Electrolyte is a subclass of ConductorSubstance


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