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Term 1: Term 2:

(=>
    (instance ?C ElectricalConductor)
    (exists (?S)
        (and
            (subclass ?S ConductorSubstance)
            (material ?S ?C))))
engineering.kif 826-831
(=>
    (instance ?BERG Iceberg)
    (exists (?SHEET)
        (and
            (subclass ?SHEET Glacier)
            (holdsDuring
                (ImmediatePastFn
                    (WhenFn ?BERG))
                (material ?SHEET ?BERG)))))
Geography.kif 4732-4740
(=>
    (instance ?COIN CurrencyCoin)
    (exists (?METAL)
        (and
            (subclass ?METAL Metal)
            (material ?METAL ?COIN))))
Mid-level-ontology.kif 3600-3605
(=>
    (and
        (instance ?SKI SnowSki)
        (material ?MAT ?SKI))
    (or
        (subclass ?MAT Metal)
        (subclass ?MAT Wood)
        (subclass ?MAT Plastic)))
Sports.kif 1040-1047
(=>
    (instance ?I ResistorElement)
    (exists (?S)
        (and
            (subclass ?S InsulatorSubstance)
            (material ?S ?I))))
engineering.kif 855-860
(=>
    (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 1231-1239
(=>
    (instance ?CF CharcoalFilter)
    (exists (?C)
        (and
            (subclass ?C Charcoal)
            (material ?C ?CF))))
Cars.kif 1688-1693


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