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Question answering
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==Overview== A question-answering implementation, usually a computer program, may construct its answers by querying a structured [[database]] of knowledge or information, usually a [[knowledge base]]. More commonly, question-answering systems can pull answers from an unstructured collection of natural language documents. Some examples of natural language document collections used for question answering systems include: * a {{clarify|text=local|reason=local to what?|date=April 2023}} collection of reference texts * internal organization{{ambiguous|reason=adjective could mean either "about organizing" or "pertaining to some organization"|date=April 2023}} documents and web pages * compiled [[newswire]] reports * a set of [[Wikipedia]] pages<ref name=":2" /> * a subset of [[World Wide Web]] pages
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