Complex sentence: The 1975 U.S. Open Championship was the 75th U.S. Open played June 19-23 at Medinah Country Club (Course No.3) in Medinah, Illinois.
Split into simpler sentences: The 1975 U.S. Open was the 75th U.S. Open. It was played between June 19-23,1975, at Medinah Country Club in Medinah, Illinois.