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Term 1: Term 2:

(subclass LowlandArea LandForm) Geography.kif 3984-3984 Lowland area is a subclass of land form
(subclass Plain LowlandArea) Geography.kif 4218-4218 Plain is a subclass of lowland area
(subclass Valley LowlandArea) Geography.kif 4227-4227 Valley is a subclass of lowland area


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