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Term 1: Term 2:

(subclass Coal Mineral) Geography.kif 2017-2017 Coal est une sous-classe de mineral
(subclass Coal FossilFuel) Geography.kif 2018-2018 Coal est une sous-classe de FossilFuel
(subclass Coal Rock) Geography.kif 2019-2019 Coal est une sous-classe de Rock
(subclass BrownCoal Coal) Geography.kif 2003-2003 BrownCoal est une sous-classe de Coal


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