Complex sentence: Pianissima is an Arabian mare born January 13,2003 at Janow Podlaski State Stud in Poland and on lease to the United States created a sensation in the American halter show ring.
Split into simpler sentences: Pianissima is an Arabian mare born January 13,2003 at Janów Podlaski State Stud in Poland. While on lease in the United States, Pianissima created a sensation in the American halter show ring.