3. The method of claim 1 , wherein the questions are preexisting questions, and wherein the method further comprises: determining relevance of words within the answers with respect to corresponding questions; and automatically generating supplemental questions based on words having higher relevance than other words, the supplemental questions corresponding to answers from which words of the supplemental questions were chosen; and wherein training the classifier includes training the classifier based on the preexisting questions and the supplemental questions.
4. The method of claim 3 , wherein generating the supplemental questions further includes: ranking words within the corresponding answers as a function of relevance to corresponding questions; and incorporating a given number of the ranked words into the preexisting questions to create the supplemental questions.