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KB:
Language:
Formal Language:
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Hammer(hammer)
| ball-peen_hammer, hammer, tack_hammer |
| appearance as argument number 1 |
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| appearance as argument number 2 |
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| antecedent |
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| (=> (instance ?H Hammer) (hasPurpose ?H (exists (?I ?N) (and (instance ?I Impelling) (instrument ?I ?H) (patient ?I ?N) (instance ?N Nail))))) |
Mid-level-ontology.kif 4858-4866 | If X is an instance of hammer, then X has the purpose there exist Y, Z such that Y is an instance of impelling, X is an instrument for Y, Z is a patient of Y, and Z is an instance of nail |