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SurfaceGroundArea
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| appearance as argument number 1 |
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| (subclass SurfaceGroundArea GeographicArea) | Geography.kif 2038-2038 | Surface ground area is a subclass of geographic area |
| (documentation SurfaceGroundArea EnglishLanguage "SurfaceGroundArea is a subclass of GeographicArea that is restricted to regions whose surface is solid ground. A SurfaceGroundArea may be a discontinuous region overlapping a larger, continuous GeographicArea but excluding any WaterAreas enclosed therein. Rivers, lakes, reservoirs and other surface water areas are not part of any SurfaceGroundArea.") | Geography.kif 2040-2045 | Surface ground area is a subclass of geographic area |
| appearance as argument number 2 |
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| antecedent |
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| (=> (instance ?EXCLUSIVELANDAREA SurfaceGroundArea) (not (exists (?WATERAREA) (and (instance ?WATERAREA WaterArea) (part ?WATERAREA ?EXCLUSIVELANDAREA))))) |
Geography.kif 2047-2053 | If X is an instance of surface ground area, then there doesn't exist Y such that Y is an instance of water area and Y is a part of X |
| consequent |
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| (=> (landAreaOnly ?AREA ?MEASURE) (exists (?LAND) (and (instance ?LAND SurfaceGroundArea) (part ?LAND ?AREA) (totalArea ?LAND ?MEASURE)))) |
Geography.kif 2055-2061 | If X is a land area only of Y, then there exists Z such that Z is an instance of surface ground area, Z is a part of Y, and X is a total area of Z |