(=> (instance ?COIN CurrencyCoin) (exists (?METAL) (and (subclass ?METAL Metal) (material ?METAL ?COIN)))) |
Mid-level-ontology.kif 3593-3598 | |
(=> (and (instance ?SKI SnowSki) (material ?MAT ?SKI)) (or (subclass ?MAT Metal) (subclass ?MAT Wood) (subclass ?MAT Plastic))) |
Sports.kif 1041-1048 | |
(subclass Metal ElementalSubstance) | Merge.kif 1101-1101 |