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No TPTP formula. May not be expressible in strict first order. Geography.kif 2017-2017 Coal e' uma sub-classe de Mineral
No TPTP formula. May not be expressible in strict first order. Geography.kif 2018-2018 Coal e' uma sub-classe de FossilFuel
No TPTP formula. May not be expressible in strict first order. Geography.kif 2019-2019 Coal e' uma sub-classe de Rock
No TPTP formula. May not be expressible in strict first order. Geography.kif 2003-2003 BrownCoal e' uma sub-classe de Coal


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