Complex sentence: Siemian attended Olympia High School in Orlando, Florida, where he threw for an Orange County record of 6,144 career yards and 53 touchdowns as quarterback for three seasons with the Titans.
Split into simpler sentences: Siemian attended Olympia High School in Orlando, Florida,. On the football team, he threw for an Orange County record of 6,144 career yards and 53 touchdowns as quarterback for three seasons with the Titans.