Question:  She's Working Her Way Through College is a 1952 American comedy film based loosely on a film that starred a retired American actress who appeared in how many feature films?

Context paragraphs:
The Stooge: The Stooge is a 1952 American comedy film starring the comedy team of Martin and Lewis.  The film was released on December 31, 1952 by Paramount.

Road to Bali: Road to Bali is a 1952 American comedy film directed by Hal Walker and starring Bing Crosby, Bob Hope, and Dorothy Lamour.  Released by Paramount Pictures on November 1, 1952, the film is the sixth of the seven "Road to …" movies.  It was the only such movie filmed in Technicolor and was the first to feature surprise cameo appearances from other well-known stars of the day.

The WAC from Walla Walla: The WAC from Walla Walla is a 1952 American comedy film directed by William Witney and written by Arthur T. Horman.  The film stars Judy Canova, Stephen Dunne, George Cleveland, June Vincent, Irene Ryan and Roy Barcroft.  The film was released on October 10, 1952, by Republic Pictures.

One Big Affair: One Big Affair is a 1952 American comedy film directed by Peter Godfrey and written by Leo Townsend and Francis Swann.  The film stars Evelyn Keyes, Dennis O'Keefe, Mary Anderson, Connie Gilchrist, Thurston Hall and Gus Schilling.  The film was released on February 22, 1952, by United Artists.

Sarah Polley: Sarah Ellen Polley {'1': ", '2': ", '3': ", '4': "} (born January 8, 1979) is a Canadian actress, writer, director and political activist.  Polley first garnered attention as a child actress for her role as Sara Stanley in the Canadian television series "Road to Avonlea" (1990–1996).  She has starred in many feature films, including "Exotica" (1994), "The Sweet Hereafter" (1997), "Guinevere" (1999), "Go" (1999), "The Weight of Water" (2000), "My Life Without Me" (2003), "Dawn of the Dead" (2004), "Splice" (2009), and "Mr. Nobody" (2009).

Gobs and Gals: Gobs and Gals is a 1952 American comedy film directed by R. G. Springsteen and written by Arthur T. Horman.  The film stars George Bernard, Bert Bernard, Robert Hutton, Cathy Downs, Gordon Jones and Florence Marly.  The film was released on May 1, 1952, by Republic Pictures.

She's Working Her Way Through College: She's Working Her Way Through College is a 1952 American comedy film produced by Warner Bros. A musical comedy in Technicolor, it was directed by H. Bruce Humberstone, and starred Virginia Mayo and Ronald Reagan.  "She's Working Her Way through College" is adapted quite loosely from the 1942 film of James Thurber's and Elliott Nugent's First Amendment comedy/drama "The Male Animal" that starred Olivia de Havilland and Henry Fonda and which, in turn, was based on the 1940 Broadway play of the same name and written by the same authors.

Olivia de Havilland: Dame Olivia Mary de Havilland, {'1': ", '2': ", '3': ", '4': "} ( ; born July 1, 1916) is a retired American actress.  Her career spanned from 1935 to 1988.  She appeared in 49 feature films, and was one of the leading movie stars during the golden age of Classical Hollywood.  She is best known for her early screen performances in "The Adventures of Robin Hood" (1938) and "Gone with the Wind" (1939), and her later award-winning performances in "To Each His Own" (1946), "The Snake Pit" (1948), and "The Heiress" (1949).

Eddie Dunn (actor): Eddie Dunn (March 31, 1896, Brooklyn, New York – May 5, 1951), born Edward Frank Dunn, was an American actor best known for his roles in comedy films,supporting many comedians such as Charley Chase (with whom he co-directed several short films), Charlie Chaplin, WC Fields and Laurel and Hardy.  He appeared in a 1950 episode of the TV series, "The Lone Ranger" entitled "Man Without a Gun".  Dunn also appeared as "Detective Grimes" in several of "The Falcon" series of films in the 1940s which starred George Sanders and later on his brother Tom Conway, and in many small and uncredited parts in many feature films until his death in 1951 aged 55.

Ali Baba Bujang Lapok: Ali Baba Bujang Lapok is a 1961 Singaporean comedy film directed by, written by and starring Malaysian silver-screen legend P. Ramlee and produced in Singapore by Malay Film Productions Ltd.  Based loosely on the story of Ali Baba from 1001 Arabian Nights, the film is occasionally self-referential and contains elements of anarchic comedy, burlesque comedy and farce.  The title includes the suffix "Bujang Lapok" because it is the third instalment in the "Bujang Lapok" series of comedy films that star the trio of P. Ramlee, S. Shamsuddin and Aziz Sattar.  This film marked the feature film debut of Sarimah, who would go on to a long movie career, and is also notable as one of the few P. Ramlee films where he plays the villain.

Supporting paragraphs: She's Working Her Way Through College Olivia de Havilland
Answer: 49