2. The method of claim 1 , wherein each term in the set of terms describes an aspect of the environment of a scene.
2. The method of claim 1 , wherein each term in the set of terms describes an aspect of the environment of a scene. 3. The method of claim 2 , wherein the aspect of the environment of a scene denotes one of a name of: a location, an occupied space, an unoccupied space, a room, a time of day, or a season.