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Term 1: Term 2:

(subclass MustardGas BlisterAgent) WMD.kif 492-492 芥子气 是 发泡剂 的 subclass
(subclass SulphurMustardGas MustardGas) WMD.kif 498-498 硫芥子气 是 芥子气 的 subclass
(subclass NitrogenMustardGas MustardGas) WMD.kif 503-503 氮芥子气 是 芥子气 的 subclass


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