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   Screwdriver
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| appearance as argument number 1 |
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| (documentation Screwdriver EnglishLanguage "A Device that is used to rotate a Screw, which by the action of its helical threads is driven into a medium that is softer than the material of the screw itself.") | Mid-level-ontology.kif 4085-4087 | |
| (subclass Screwdriver Device) | Mid-level-ontology.kif 4084-4084 |
| antecedent |
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| (=> (instance ?D Screwdriver) (hasPurpose ?D (exists (?R ?S) (and (instance ?R Rotating) (instrument ?R ?D) (patient ?R ?S) (instance ?S Screw))))) |
Mid-level-ontology.kif 4089-4097 |
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