Complex sentence: The 1965 U.S. Open Championship was the 65th U.S. Open played June 17-21 at Bellerive Country Club in St. Louis, Missouri.
Split into simpler sentences: The 1965 U.S. Open was the 65th U.S. Open. It was played between June 18-21,1965, at Bellerive Country Club in St. Louis, Missouri.