2. The method of claim 1 , wherein the collection of documents is generated by a query request.
2. The method of claim 1 , wherein the collection of documents is generated by a query request. 4. The method of claim 2 , wherein the contents of the documents are represented by, at least in part, (i) respective titles and (ii) respective particular sentences, each of the particular sentences containing a query word that is in the query request.