16. The computer system of claim 15 , wherein replacing further comprises determining whether the first or second phrase are present in a source from which the received terms were derived.
16. The computer system of claim 15 , wherein replacing further comprises determining whether the first or second phrase are present in a source from which the received terms were derived. 17. The computer system of claim 16 , wherein replacing further includes using a phrase similarity matrix, the phrase similarity matrix including, for each ambiguous term, one or more phrases associated with the ambiguous term.