2. The system of claim 1 , wherein the grammar rules include a plurality of different types of rules selected from the group consisting of: lexical rules; syntactic rules; and semantic rules.
2. The system of claim 1 , wherein the grammar rules include a plurality of different types of rules selected from the group consisting of: lexical rules; syntactic rules; and semantic rules. 3. The system of claim 2 , wherein text strings in the storage medium are tagged with grammar rules of a plurality of types.