6. The non-transitory computer-readable medium of claim 5 , wherein (F) comprises: (F)(1) filtering text from the third document by reference to the second document to produce a filtered document in which text filtered from the third document is marked as unreliable; and (F)(2) using the filtered document and the spoken audio stream to train the acoustic model.
5. The non-transitory computer-readable medium of claim 4 , wherein the method further comprises: (F) using the filtered document and the spoken audio stream to train an acoustic model.