The syntacticanalyzer makes lexical analysis and syntactic analysis on the query, and sets up syntactic tree from the structure of the query.
语法分析器完成词法分析和语法分析,建立具有多维语法结构的语法树。
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SYNAC is a syntacticanalyzer based on some semantic analysis, which USES Definite Clause Grammar as its expressing tool. It can process more complicate sentences.