2. The method according to claim 1 , further comprising: applying parts-of-speech tags to the text documents and user question to generate tagged text documents and user question; parsing the tagged text documents and user question to generate parsed and tagged text documents and user question; and semantically analyzing the parsed and tagged text documents and user question to generate semantically analyzed, parsed, and tagged text documents and user question.
2. The method according to claim 1 , further comprising: applying parts-of-speech tags to the text documents and user question to generate tagged text documents and user question; parsing the tagged text documents and user question to generate parsed and tagged text documents and user question; and semantically analyzing the parsed and tagged text documents and user question to generate semantically analyzed, parsed, and tagged text documents and user question. 4. The method according to claim 2 , wherein the semantic analysis comprises: recognizing one or more facts in the form of one or more expanded Subject-Action-Object (eSAO) sets in the text documents and user question, wherein each eSAO set has one or more eSAO components; and recognizing rules in the text documents and user question that reflect regularities of the outside world/knowledge domain in the form of Cause-Effect relations in the eSAO sets, wherein each of the Cause-Effect relations comprises a Cause eSAO and an Effect eSAO.