Which film won the Academy Award for Best Picture for 1957?

Which film won the Academy Award for Best Picture for 1955? Who directed 'Marty', the Best Picture winner for 1955? Which film won the Academy Award for Best Picture for 1956? Who directed 'Around the World in 80 Days', the Best Picture winner for 1956? Who directed 'The Bridge on the River Kwai', the Best Picture winner for 1957? Which film won the Academy Award for Best Picture for 1958? Who directed 'Gigi', the Best Picture winner for 1958? Which film won the Academy Award for Best Picture for 1960?