ActorTypeByMedium is a collection of collections. Each element is a collection of <font color=#ff0000>#$ActorActresses</font> grouped by the dramatic medium in which they work. Some examples are ActorInPlays and ActorInMovies. The motivation for creating this collection is to make use of a faceting of Actor to generate English questions to aid classification. See <font color=#ff0000>#$NoteAboutHowFacetAssertionsAreUsed</font>. Since instances of Actor can work in more than one medium, the elements of this collection need not be disjoint.