A computer-implemented method includes receiving a question. The question is directed to a question answering system. The method includes extracting two or more queries from the question. The method includes generating two or more question sets, each of the two or more question sets addressing all of the two or more queries. The method includes selecting one of the two or more question sets to yield a selected question set, based on analyzing each of the two or more question sets according to a pre-trained model. The method includes presenting the selected question set to the question answering system.