19. The article of claim 18 , wherein the instructions for generating the translation for the noun phrase and the prepositional phrase comprise instructions operative to cause the machine to generate the translation using the first model; and wherein the instructions for generating the translation of the input string comprise instructions operative to cause the machine to generate the translation using a second model.
19. The article of claim 18 , wherein the instructions for generating the translation for the noun phrase and the prepositional phrase comprise instructions operative to cause the machine to generate the translation using the first model; and wherein the instructions for generating the translation of the input string comprise instructions operative to cause the machine to generate the translation using a second model. 20. The article of claim 19 , wherein the first model comprises a model trained using a corpus consisting of noun phrases and prepositional phrases.