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Term 1: Term 2:

(subclass DirectedGraph Graph) Merge.kif 5599-5599 Directed graph is a subclass of graph
(subclass Tree DirectedGraph) Merge.kif 5616-5616 Tree is a subclass of directed graph
(subclass GraphPath DirectedGraph) Merge.kif 5649-5649 Graph path is a subclass of directed graph

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