19. The method according to claim 12 , further comprising: evaluating whether said confidence score is below a confidence threshold value; and if said confidence score is below said confidence threshold value, triggering said step of identifying missing information.
12. A method, comprising: generating candidate answer to a question determining a confidence score for each of said candidate answers; evaluating sources of evidence used to generate said candidates answers; identifying missing information from a corpus of data, said missing information comprising any information that improves the ability of a question-answer system to understand and evaluate sources of evidence associated with a candidate answer; generating a follow-on inquiry, said follow-on inquiry prompting for said missing information to be provided; outputting said follow-on inquiry to an external source; receiving a response to said follow-on inquiry from said external source; and adding said response to said corpus of data.