Question: Jean Marsh plays the role of a princess in what movie?
Sentence (from "Return to Oz"): It is loosely based on L. Frank Baum's "Oz" novels, mainly "The Marvelous Land of Oz" (1904) and "Ozma of Oz" (1907), yet is set six months after the events of the first novel, "The Wonderful Wizard of Oz" (1900) took place.
Relevant evidence: No