question: Jean Marsh plays the role of a princess in what movie?
answer: Return to Oz
context: Title: Jean Marsh
  Passage: Jean Lyndsey Torren Marsh, {'1': ", '2': ", '3': ", '4': "} (born 1 July 1934) is an English actress and writer.  Marsh co-created and starred in the ITV series "Upstairs, Downstairs" (1971–75), for which she won the 1975 Emmy Award for Outstanding Lead Actress in a Drama Series for her performance as Rose Buck.  She later reprised the role in the BBC's revival of the series (2010–12).  Marsh also co-created the television series "The House of Eliott" in 1991.  Her film appearances include "Cleopatra" (1963), "Frenzy" (1972), "The Changeling" (1980), "Return to Oz" (1985), "Willow" (1988) and "Monarch" (2000).
  Title: Willow (film)
  Passage: Willow is a 1988 British-American high fantasy film directed by Ron Howard, produced and with a story by George Lucas, and starring Warwick Davis, Val Kilmer, Joanne Whalley, Jean Marsh, and Billy Barty.  Davis plays the eponymous lead character and hero: a reluctant farmer who plays a critical role in protecting a special baby from a tyrannical queen who vows to destroy her and take over the world in a high fantasy setting.
  Title: Return to Oz
  Passage: Return to Oz is a 1985 fantasy adventure film directed and written by Walter Murch, an editor and sound designer, co-written by Gill Dennis and produced by Paul Maslansky.  It stars Nicol Williamson as the Nome King, Jean Marsh as Princess Mombi, Piper Laurie as Aunt Em, Matt Clark as Uncle Henry and introduces Fairuza Balk as Dorothy Gale.  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.  Although it is not a sequel and unrelated to the 1939 Metro-Goldwyn-Mayer film, "The Wizard of Oz", it borrows a few elements of it such as the ruby slippers.
  Title: Gaayathri
  Passage: Gaayathri is a Tamil film is directed by R.Pattabhiraman.  It has Rajinikanth and Sridevi in the lead roles.  Once again Rajini plays a cruel husband of Sridevi.  Jaishankar plays a guest role in this movie.  Singer Sujatha Mohan made her debut as a singer through this film at the age of 12.  The movie was based on the story "Gayathri" written by Sujatha Rangarajan.  According to Panchu Arunachalam, this was the movie that turned Rajini's fortunes as seeing the audience's favorable response to Rajini (Villain) over Jaishankar (hero), he decided to cast him in a positive role in Bhuvana oru kelvikuri.
citations: Jean Marsh Return to Oz