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Term 1: Term 2:

(subclass CarRacing Racing) Sports.kif 248-248 CarRacing 是 赛跑 的 subclass
(subclass FormulaOneRacing CarRacing) Sports.kif 251-251 FormulaOneRacing 是 CarRacing 的 subclass
(subclass KartRacing CarRacing) Sports.kif 253-253 KartRacing 是 CarRacing 的 subclass


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