1. A method comprising: receiving a short message from a mobile device with a server; algorithmically determining a context-data type, wherein the context-data type is determined by a meaning of a term of the short message, and wherein the context-data type provides information about an environment of the mobile device; identifying at least one context-data source that provides the context-data type; algorithmically ranking the at least one context data source according a specified parameter, wherein the specified parameter comprises a pecuniary cost to acquire the context data from the at least one context data source; and generating a request for a context data of the context-data type from the at least one context data source.