(subclass GraphElement Proposition) | Merge.kif 5819-5819 | 子類 GraphElement and Proposition |
(subclass GraphNode GraphElement) | Merge.kif 5832-5832 | 子類 GraphNode and GraphElement |
(subclass GraphArc GraphElement) | Merge.kif 5842-5842 | 子類 GraphArc and GraphElement |