1. A method for question-answering based on automatic semantic labeling of text documents and user questions, the method comprising: providing at least one computer processor coupled to at least one non-transitory storage medium, the at least one computer processor performing the method, including: electronically receiving natural language text documents; electronically receiving a user question formulated in a natural language; performing a basic linguistic analysis of the text documents and the user question; performing semantic labeling of the text documents through semantic analysis, and storing the semantically labeled text documents in a labeled text documents database; performing semantic labeling of the user question through semantic analysis; searching the labeled text documents database for text fragments relevant to the semantically labeled user question, wherein relevance is based on a ranking of the text fragments relative to the semantically labeled user question; and synthesizing answers to the user question from the relevant text fragments, and electronically presenting the synthesized answer to the user.