This Recommendation describes metadata related to the intelligent question answering service (IQAS). The IQAS framework in [ITU-T F.746.3] already identifies some elements and attributes related to an IQAS; however@ it does not define all elements needed to provide the basic features of an IQAS. This Recommendation specifies metadata for the following IQAS features as well as the general information flows to describe how metadata are used in the IQAS. ?C information for natural language processing; ?C information for question analysis; ?C information for candidate answer generation; ?C information for answer inference/generation; ?C information for input and output.