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No TPTP formula. May not be expressible in strict first order. Merge.kif 2128-2128 集或类 是 抽象体 的 subclass
No TPTP formula. May not be expressible in strict first order. Merge.kif 2136-2136 类 是 集或类 的 subclass
No TPTP formula. May not be expressible in strict first order. Merge.kif 2148-2148 集合 是 集或类 的 subclass


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