31.   The film is based loosely on the memories of Alexandra Rose, one of the producers, who had a friendship with a mentally disabled woman.

32.   The film is based on a novel by Joan Lindsay, who in turn based her book on what was believed to be a true story.

33.   The film is based on a one-page plot outline and a lot of improvisation.

34.   The film is based on a short story in The New Yorker by Hanif Kureishi, who also wrote the screenplay.

35.   The film is based on a true story about the relationship between a homeless, would-be novelist and a woman with an attitude.

36.   The film is based on the true story of the Comedian Harmonists, a popular singing group that was modeled on the American group the Revellers.

37.   The film is based on a popular series of books by Ingvar Ambjornsen.

38.   The film is based on a somewhat-autobiographical novel by Graham Greene.

39.   The film is based on the current best seller by Jon Krakauer, who joined the expedition as a reporter for Outside magazine.

40.   The film traces the slow, circuitous reawakening of Primo Levi, the Italian writer on whose memoir the film is based, and his fellow sufferers.