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   Rapids
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| appearance as argument number 1 |
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| (subclass Rapids StreamWaterArea) | Geography.kif 7233-7233 | Rapids is a subclass of stream water area |
| (documentation Rapids EnglishLanguage "Rapids is the class of WaterAreas that are parts of a StreamWaterArea where the currents move swiftly over rocks.") | Geography.kif 7235-7237 | Rapids is a subclass of stream water area |
| (externalImage Rapids "http://upload.wikimedia.org/wikipedia/commons/3/3a/ Green_wall.JPG") | pictureList.kif 4802-4802 | Rapids is a subclass of stream water area |
| appearance as argument number 2 |
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| antecedent |
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| (=> (instance ?RAPIDS Rapids) (exists (?RIVER) (and (instance ?RIVER River) (part ?RAPIDS ?RIVER)))) |
Geography.kif 7239-7244 | If X is an instance of rapids, then there exists Y such that Y is an instance of river and X is a part of Y |
| (=> (and (instance ?RAPIDS Rapids) (bottom ?BOTTOM ?RAPIDS)) (exists (?ROCK) (and (instance ?ROCK Rock) (part ?ROCK ?BOTTOM)))) |
Geography.kif 7246-7253 | If X is an instance of rapids and the bottom of X is Y, then there exists Z such that Z is an instance of rock and Z is a part of Y |
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