4. The method of claim 1 , wherein the plurality of features includes a lexical feature.
4. The method of claim 1 , wherein the plurality of features includes a lexical feature. 5. The method of claim 4 , wherein the lexical feature comprises at least one of: a category-specific cue, said category-specific cue being associated with a discourse element; a general vocabulary cue, said general vocabulary cue being associated with a discourse structure; and a key term, said key term being associated with a discourse relationship.