17. The method according to claim 14 , further comprising: receiving from said QA system first answers to said reformulated question, each of said first answers having a confidence score; identifying a missing link in said first question, said missing link comprising at least one of said first answers being related to said replacement phrase and having a confidence score below a predetermined value; creating a third question based on said missing link and said replacement phrase; inputting said third question to said QA system; and receiving from said QA system third answers to said third question, said second question incorporating one or more answers to said third question into said first question.
17. The method according to claim 14 , further comprising: receiving from said QA system first answers to said reformulated question, each of said first answers having a confidence score; identifying a missing link in said first question, said missing link comprising at least one of said first answers being related to said replacement phrase and having a confidence score below a predetermined value; creating a third question based on said missing link and said replacement phrase; inputting said third question to said QA system; and receiving from said QA system third answers to said third question, said second question incorporating one or more answers to said third question into said first question. 18. The method of claim 17 , further comprising: identifying first types for said first answers; and identifying a second type for said first question, said missing link comprising at least one of said first answers being related to said replacement phrase and having a type different from said second type.