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Term 1: Term 2:

(subclass Fuel Substance) Mid-level-ontology.kif 1693-1693 Fuel est une sous-classe de substance
(subclass FossilFuel Fuel) Mid-level-ontology.kif 1687-1687 FossilFuel est une sous-classe de Fuel
(subclass Charcoal Fuel) Cars.kif 1670-1670 Charcoal est une sous-classe de Fuel


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