31. A system comprising: at least one processor programmed to: receive a speech recognition result from an automatic speech recognition (ASR) engine, the speech recognition result including a plurality of ordered interpretations, wherein each of the ordered interpretations includes a plurality of information items; and analyze the plurality of interpretations using an external knowledge source to create a filtered plurality of ordered interpretations; wherein the external knowledge source includes a position location information, and wherein the at least one processor is further programmed to, during the analyzing of the plurality of interpretations, determine if any of the plurality of information items relate to travel requests, and if so, add the position location information to each information item of the plurality of information items relating to travel.
33. The system of claim 31 , wherein the at least one processor is further programmed to transmit the filtered plurality of ordered interpretations to a dialog manager module to create a textual output.