13. The data search method according to claim 12 , wherein the inspecting of the initial answer candidate further comprising comparing the lexical meaning of the modifier, which is analyzed, with the composed word of the sentence obtained as the result of the second search processing.
12. The data search method according to claim 9 , further comprising: extracting a question focus and a modifier modifying the question focus from the input question; and analyzing a lexical meaning of the modifier as the lexical meaning of the specific word of the input question.