1. A system for generating a summary of a plurality of documents comprising: a computer processor; a computer readable document collection containing a plurality of related documents stored in electronic form therein; a plurality of forms of multiple document summarization engines including a single event engine, a biography engine and a multi-event engine operating on the computer processor; and a router, the router determining a temporal relationship of at least a subset of the documents in the collection and selecting one of the plurality of forms of multiple document summarization engines for generating a summary of the subset of documents based on the temporal relationship, wherein the router selects the biography engine if the documents in the collection are not generated within a predetermined time period and the number of capitalized words and the number of personal pronouns each exceed a predetermined threshold value.