| MetalArtifact |
| appearance as argument number 1 |
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| appearance as argument number 2 |
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| (subclass ZincArtifact MetalArtifact) | Society.kif 576-576 | ZincArtifact is a subclass of MetalArtifact |
| (subclass Steel MetalArtifact) | Society.kif 1413-1413 | Steel is a subclass of MetalArtifact |
| antecedent |
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| (=> (instance ?ITEM MetalArtifact) (or (instance ?ITEM Metal) (exists (?PART) (and (instance ?PART Metal) (or (part ?PART ?ITEM) (component ?PART ?ITEM)))))) |
Society.kif 1401-1410 | If X is an instance of MetalArtifact, then X is an instance of metal or there exists Y such that Y is an instance of metal and Y is a part of X or Y is a component of X |
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