Morphological analysis and syntactic analysis are performed to an input natural sentence, semantic construction processing is performed to analysis results to construct partial semantic structure, and the whole semantic structure of the input natural sentence is constructed while coupling the partial semantic structure by a semantic root. 入力自然文に形態素解析や構文解析を行い、その解析結果に意味構築処理を行って、部分的な意味構造を構築し、部分的な意味構造を意味根で結合しながら、入力自然文の全体の意味構造を構築する。 - 特許庁