12. A computer based system for automatically generating a hierarchical grammar associated with a plurality of tasks comprising: creation means for creating a sub-grammar for each of the plurality of tasks, wherein the creation means comprises: receiving means for receiving data representing the task based from responses received from a distributed database; tagging means for automatically tagging the data into parts of speech to form tagged data; identification means for identifying filler words and core words from said tagged data by applying rules to differentiate between filler words and core words; modeling means for automatically modeling sentence structure based upon said tagged data using a set of modeling rules; synonym means for automatically identifying synonyms of said core words; and grammar means for automatically creating a sub-grammar using the modeled sentence structure, the tagged data, the identified synonyms, and the identified core words; and creation means for creating a high-level grammar by combining filler words identified in the creation of the sub-grammars.
12. A computer based system for automatically generating a hierarchical grammar associated with a plurality of tasks comprising: creation means for creating a sub-grammar for each of the plurality of tasks, wherein the creation means comprises: receiving means for receiving data representing the task based from responses received from a distributed database; tagging means for automatically tagging the data into parts of speech to form tagged data; identification means for identifying filler words and core words from said tagged data by applying rules to differentiate between filler words and core words; modeling means for automatically modeling sentence structure based upon said tagged data using a set of modeling rules; synonym means for automatically identifying synonyms of said core words; and grammar means for automatically creating a sub-grammar using the modeled sentence structure, the tagged data, the identified synonyms, and the identified core words; and creation means for creating a high-level grammar by combining filler words identified in the creation of the sub-grammars. 21. The system of claim 12 , further comprising: filler synonym means for identifying synonyms of the identified filler words.