Complex sentence: Kemper Arena is a 19,500 seat indoor arena in Kansas City, Missouri, that has hosted NCAA Final Four basketball games, professional basketball and hockey teams, the 1976 Republican National Convention, concerts, and is the ongoing host of the American Royal livestock show.
Split into simpler sentences: Kemper Arena is a 19,500 seat indoor arena in Kansas City, Missouri. It has hosted NCAA Final Four basketball games, professional basketball and hockey teams, the 1976 Republican National Convention, concerts, and is the ongoing host of the American Royal livestock show.