| appearance as argument number 1 |
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| (subclass TabletComputer PortableComputer) | Mid-level-ontology.kif 32177-32177 | Tablet computer is a subclass of portable computer |
| (documentation TabletComputer EnglishLanguage "A PortableComputer lacking a physical ComputerKeyboard, but having a touch-sensitive screen.") | Mid-level-ontology.kif 32178-32179 | Tablet computer is a subclass of portable computer |
| appearance as argument number 2 |
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| (subclass AppleIPad TabletComputer) | ComputingBrands.kif 612-612 | IPad is a subclass of tablet computer |
| (termFormat EnglishLanguage TabletComputer "tablet computer") | domainEnglishFormat.kif 65579-65579 | IPad is a subclass of tablet computer |
| antecedent |
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| (=> (instance ?T TabletComputer) (not (exists (?K) (and (instance ?K ComputerKeyboard) (part ?K ?T))))) |
Mid-level-ontology.kif 32181-32187 | If X is an instance of tablet computer, then there doesn't exist Y such that Y is an instance of computer keyboard and Y is a part of X |
| (=> (instance ?T TabletComputer) (exists (?K) (and (instance ?K ComputerTouchscreen) (part ?K ?T)))) |
Mid-level-ontology.kif 32189-32194 | If X is an instance of tablet computer, then there exists Y such that Y is an instance of computer touchscreen and Y is a part of X |
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Sigma version 3.0.0-c58f641d (2026-04-12) is open source software produced by Articulate Software and its partners