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Term 1: Term 2:

(subclass Fuel Substance) Mid-level-ontology.kif 1693-1693 子類 汽油 and Substance
(subclass FossilFuel Fuel) Mid-level-ontology.kif 1687-1687 子類 化石燃料 and 汽油
(subclass Charcoal Fuel) Cars.kif 1670-1670 子類 Charcoal and 汽油


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