1. A computer-implemented method comprising: receiving, at a computer system, context information that is identified based on a map that was presented on a first computing device in response to a non-verbal user action that was received as input by the first computing device, wherein the non-verbal user action comprises a user providing a request to obtain the map on the first computing device or the user inputting a search query into an interface provided by the first computing device; identifying, by the computer system and using the context information, a geographic location that is independent of the geographic location of the first computing device; identifying, by the computer system, a grammar that is associated with the identified geographic location and that includes a vocabulary with terms that are relevant to the identified geographic location and outputting a grammar indicator for use in selecting the identified grammar for voice recognition processing of vocal input from the user, to cause a grammar used to process vocal.