47. The computer-readable storage medium of claim 46 , wherein the instructions, when executed, cause the computer system to execute steps comprising: generating a rhetorical structure tree based on said flat file; and identifying said rhetorical feature based on said rhetorical structure tree.
47. The computer-readable storage medium of claim 46 , wherein the instructions, when executed, cause the computer system to execute steps comprising: generating a rhetorical structure tree based on said flat file; and identifying said rhetorical feature based on said rhetorical structure tree. 48. The computer-readable storage medium of claim 47 , wherein said rhetorical structure tree is mapped to a plurality of models and said probability is determined based on a voting algorithm.