Which film won the Academy Award for Best Picture for 1970?

Which film won the Academy Award for Best Picture for 1968? Who directed 'Oliver!', the Best Picture winner for 1968? Which film won the Academy Award for Best Picture for 1969? Who directed 'Midnight Cowboy', the Best Picture winner for 1969? Who directed 'Patton', the Best Picture winner for 1970? Which film won the Academy Award for Best Picture for 1971? Which film won the Academy Award for Best Picture for 1973? Who directed 'The Sting', the Best Picture winner for 1973?