Complex sentence: The 1988 U.S. Open was the 88th U.S. Open, held June 16--20,1988, at The Country Club in Brookline, Massachusetts, a suburb southwest of Boston.
Split into simpler sentences: The 1988 U.S. Open was the 88th U.S. Open. The golf tournament was held June 16--20,1988, at The Country Club in Brookline, Massachusetts, a suburb southwest of Boston.