A computer-implemented method for analyzing documents includes a processor receiving one or more documents, from a community-based document delivery system, related to a domain of interest; the processor identifying and extracting one or more data items from the one or more documents; determining if an identified and extracted data item comprises a true mention of a named entity; analyzing a context of the true mention of the named entity in the document; and determining, based on the analyzed context, if the document is a true document.