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   TireChain
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| appearance as argument number 1 |
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| (subclass TireChain Device) | Cars.kif 4330-4330 | Snow chain is a subclass of device |
| (documentation TireChain EnglishLanguage "Any web of chains designed to be mounted covering a tire, to increase traction of the tire on soft surfaces. While primarily for use on snow in passenger vehicles, these devices can be used on any other soft surface for the same purpose.") | Cars.kif 4333-4336 | Snow chain is a subclass of device |
| appearance as argument number 2 |
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| (termFormat EnglishLanguage TireChain "tire chain") | Cars.kif 4331-4331 | |
| (termFormat EnglishLanguage TireChain "snow chain") | Cars.kif 4332-4332 |
| antecedent |
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| (=> (instance ?TC TireChain) (exists (?C) (and (instance ?C Chain) (part ?C ?TC)))) |
Cars.kif 4338-4343 | If X is an instance of snow chain, then there exists Y such that Y is an instance of chain and Y is a part of X |
| (=> (instance ?TC TireChain) (hasPurpose ?TC (exists (?V ?W ?F) (and (instance ?V RoadVehicle) (instance ?W Wheel) (part ?W ?V) (instance ?F Friction) (covers ?TC ?W) (instrument ?F ?TC))))) |
Cars.kif 4345-4355 | If X is an instance of snow chain, then All of the following hold: (1) X has the purpose there exist Y, Z (2) W such that Y is an instance of road vehicle (3) Z is an instance of wheel (4) Z is a part of Y (5) W is an instance of friction (6) X covers Z (7) X is an instrument for W |
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