Which film won the Academy Award for Best Picture for 1945?

Which film won the Academy Award for Best Picture for 1942? Who directed 'Mrs. Miniver', the Best Picture winner for 1942? Which film won the Academy Award for Best Picture for 1944? Who directed 'Going My Way', the Best Picture winner for 1944? Who directed 'The Lost Weekend', the Best Picture winner for 1945? Which film won the Academy Award for Best Picture for 1946? Who directed 'The Best Years of Our Lives', the Best Picture winner for 1946? Which film won the Academy Award for Best Picture for 1947?