12. The system of claim 7 , wherein the command sentences are voice command sentences.
12. The system of claim 7 , wherein the command sentences are voice command sentences. 13. The system of the claim 12 , wherein for each action, generating a training set of command sentences from the corresponding set of command sentences includes removing each n-gram from each sentence in the corresponding set of command sentences for the action that is also not a first n-gram for the action.