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No TPTP formula. May not be expressible in strict first order. Merge.kif 5668-5668 Directed graph is a subclass of graph
No TPTP formula. May not be expressible in strict first order. Merge.kif 5685-5685 Tree is a subclass of directed graph
No TPTP formula. May not be expressible in strict first order. Merge.kif 5718-5718 Graph path is a subclass of directed graph


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