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No TPTP formula. May not be expressible in strict first order. Transportation.kif 2351-2351 子類 客運登陸艇 and 滾上滾下貨船
No TPTP formula. May not be expressible in strict first order. Transportation.kif 2352-2352 子類 客運登陸艇 and 客貨船


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