The year 1969 in film involved some significant events, with "Butch Cassidy and the Sundance Kid" dominating the U.S. box office and becoming one of the highest-grossing films of all time and "Midnight Cowboy", a film rated X, winning the Academy Award for Best Picture.
The year 1957 in film involved some significant events, with "The Bridge on the River Kwai" topping the year's box office and winning the Academy Award for Best Picture.
"The "River Kwai" March" is a march composed by Malcolm Arnold in 1957.
 It was written as an orchestral counter-march to the "Colonel Bogey March", which is whistled by the soldiers entering the prisoner camp in the film "The Bridge on the River Kwai" and again near the end of the film when the bridge is formally dedicated.
 The Arnold march re-appears (without the "Colonel Bogey March") several times in the film and is repeated at the finale.
The year 1962 in film involved some very significant events, with "Lawrence of Arabia" the year's top-grossing film as well as winner of the Academy Award for Best Picture.
Brigadier Sir Philip John Denton Toosey (12 August 1904 – 22 December 1975) was, as a lieutenant colonel, the senior Allied officer in the Japanese prisoner-of-war camp at Tha Maa Kham (known as Tamarkan) in Thailand during World War II.
 The men at this camp built Bridge 277 of the Burma Railway as later fictionalized in the book "The Bridge over the River Kwai" by Pierre Boulle, and since adapted into the Oscar-winning film "The Bridge on the River Kwai" in which Alec Guinness played the senior British officer, Lt. Colonel Nicholson.
 Both the book and film outraged former prisoners because Toosey did not collaborate with the enemy, unlike the fictional Lt. Colonel Nicholson.
The year 1975 in film involved some significant events, with Steven Spielberg's thriller "Jaws" topping the box office.
The year 1961 in film involved some significant events, with "West Side Story" winning 10 Academy Awards.
The year 1965 in film involved some significant events, with "The Sound of Music" topping the U.S. box office.
The Bridge on the River Kwai is a 1957 British-American epic war film directed by David Lean and starring William Holden, Jack Hawkins, and Alec Guinness, and featuring Sessue Hayakawa.
 Based on the novel "Le Pont de la Rivière Kwai" (1952) by Pierre Boulle, the film is a work of fiction, but borrows the construction of the Burma Railway in 1942–1943 for its historical setting.
 The movie was filmed in Ceylon (now Sri Lanka).
 The bridge in the film was near Kitulgala.
The year 1957 in television involved some significant events.
 Below is a list of television-related events during 1957.

Question: The year 1957 in film involved some significant events, with "The Bridge on the River Kwai" topping the year's box office and winning the Academy Award for what?
Answer: Best Picture