Complex sentence: The 2000 United States Open Golf Championship was the 100th Annual U.S. Open Championship of golf and was played from Thursday, June 15 through Sunday, June 18 at Pebble Beach Golf Links.
Split into simpler sentences: The 2000 United States Open Golf Championship was the 100th U.S. Open Championship of golf. It was played from Thursday, June 15 through Sunday, June 18 at Pebble Beach Golf Links.