| UplandArea(upland area) | | bank, bluff, esker, ridge, scablands |
| appearance as argument number 1 |
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| (documentation UplandArea EnglishLanguage "An UplandArea is a LandArea elevated above the surrounding terrain.") | Geography.kif 3981-3982 | |
| (subclass UplandArea LandForm) | Geography.kif 3980-3980 | Upland area is a subclass of land form |
| appearance as argument number 2 |
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| consequent |
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| (=> (attribute ?AREA MountainousTerrain) (instance ?AREA UplandArea)) |
Geography.kif 1797-1799 |
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