25. The computer-readable storage medium of claim 21 wherein the predetermined set of features comprises a feature based on a presence or an absence of one or more selected words.
25. The computer-readable storage medium of claim 21 wherein the predetermined set of features comprises a feature based on a presence or an absence of one or more selected words. 27. The computer-readable storage medium of claim 25 wherein the one or more selected words comprise one or more words of belief.