12. A computer-implemented method for executing, by a processor of a computing device, a prompt statement having a NAME variable and a KEY variable associated therewith, said method comprising: determining that the prompt statement specifies a resource string; identifying, by the processor a grammar variable that corresponds to the KEY variable; concatenating the grammar variable to the NAME variable; and identifying a resource string for the prompt statement that corresponds to the NAME variable.
13. The computer-implemented method of claim 12 , further comprising: retrieving one or more media files that correspond to the resource string; and rendering the retrieved media files in response to the prompt statement.