Sophocles increased the dithyrambic chorus to fifteen, which is not true for the use of actors on the stage.
Sophocles added a third actor to enable "overheard" dialogue situations.
Aeschylus added female actors.
Sophocles also increased the dithyrambic chorus to fifteen.
Therefore, the statement that Sophocles increased the dithyrambic chorus to fifteen is NOT true about the use of actors on the stage.
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