13. The method of claim 1 wherein the comparing step identifies a plurality of passages in the first body of text whose expanded logical forms intersect with the expanded logical form characterizing a semantic relationship between selected words in the passage of the second body of text.
15. The method of claim 13 wherein the first body of text is divided into documents organized into groups of documents, further including the step of ranking the document groups containing an identified passage by applying a combination of term frequency and inverted document frequency weighting.