Complex sentence: Lenz fell and was struck by another rider, 12-year-old Xavier Zayat.The medics immediatly put Lenz into a neck brace, and rushed him to the Methodist Hospital of Indianapolis, where he later died of his injuries.
Split into simpler sentences: Lenz fell and was struck by another rider, 12-year-old Xavier Zayat. He was transported to Methodist Hospital of Indianapolis, where he died of his injuries.