2. The method of claim 1 , wherein grouping related noun phrases together into respective equivalence classes includes performing an anaphora resolution algorithm on the first document to reduce a total number of groupings of related noun phrases.
2. The method of claim 1 , wherein grouping related noun phrases together into respective equivalence classes includes performing an anaphora resolution algorithm on the first document to reduce a total number of groupings of related noun phrases. 3. The method of claim 2 , wherein performing an anaphora resolution algorithm on the first document includes associating anaphoric expressions in the first document with an antecedent noun phrase.