5. The method of claim 1 , wherein the extracted features of the input question are identified by: identifying, by the QA system, a utility of each term in the input question; eliminating, by the QA system, zero or more terms within the input question that comprise a utility less than a predetermined value; and adding, by the QA system, the remaining terms in the input question to the extracted features.
7. The method of claim 5 , wherein the extracted features of the input question are further identified by: identifying, by the QA system, one or more tenses associated with the terms added to the extracted features; and adding, by the QA system, the one or more tenses associated with the terms to the extracted features.