12. The method of claim 11 further comprising: normalizing the first needs expression and the plurality of needs expressions by identifying the first subject and the plurality of subjects and removing excess wording.
12. The method of claim 11 further comprising: normalizing the first needs expression and the plurality of needs expressions by identifying the first subject and the plurality of subjects and removing excess wording. 13. The method of claim 12 further comprising: grouping the first sub-tree and the plurality of sub-trees by topicality groups, wherein the first subject and the plurality of subjects correspond to the topicality groups.