A method and system for identifying a subject of a document and facts included within are described. A source document that includes facts and linking documents that include hyperlinks to the source document are identified. The anchor texts of the hyperlinks are identified and candidate labels are generated based on the anchor texts. One of the candidate labels is selected as the unifying subject of the facts. An information set, distinct from the source document, is stored in a facts database, wherein the stored information set includes the unifying subject, and source document information associating the source document with the information set.