Answering speech covers all recordings that are prompted by a question. These questions can be designed in way that they can be answered only by selecting from a given set of closed vocabulary options. For instance a banking system asks for the credit card number of a client, yes/no questions like Are you female?. Or they can be designed to be answered by fee text, e.g. What did you have for breakfast? Note that the quality of speech differs considerably from a read text and from spontaneous speech as being used in a dialogue.