31. The method of claim 30 , in which the context of the natural language response includes a time at which the natural language response is to be provided, a style of the natural language response, or both.
30. The method of claim 28 , comprising determining a context of the natural language response based on one or more of (a) one or more of the appearance, the voice, or the behavior of the person, (b) information about a time period during which the person lived, or (c) autobiographical information about the person.