1. A method, in a data processing system comprising a processor and a memory, for answering questions about at least one previous execution of a question answering (QA) system on a previous input question, comprising: receiving, in the data processing system, an input question directed to a previous execution of a QA system with regard to a previous input question; processing, by the data processing system, the input question to generate at least one query for application to a corpus of information, wherein the corpus of information comprises information about the QA system and the previous execution of the QA system on the previous input question; applying, by the data processing system, the at least one query to the corpus of information to generate candidate answers to the input question; and outputting, by the data processing system, a final answer for the input question based on the candidate answers.