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Term 1: Term 2:

(subclass WhirlpoolTub FluidContainer) Mid-level-ontology.kif 25277-25277 WhirlpoolTub 是 液体容器 的 subclass
(subclass HotTub WhirlpoolTub) Mid-level-ontology.kif 25300-25300 HotTub 是 WhirlpoolTub 的 subclass


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