8. The media of claim 2 , wherein the system further comprises a search component that facilitates searching a subset of the plurality of sub-domains based at least in part upon a user input.
9. The media of claim 8 , wherein the user input is a speech input, and wherein the search component facilitates natural language processing (NLP) of the speech input based at least in part upon the grammar and lexicon available for recognition in natural language and speech processing in each sub-domain.