Complex sentence: The history of Crystal Palace F.C. is about an English professional football club who were founded in 1905 at the famous Crystal Palace Exhibition building and during their early years the club played at the FA Cup Final venue which was situated inside the historic Palace grounds.
Split into simpler sentences: The history of Crystal Palace F.C. is about an English professional football club. They were founded in 1905 at the famous Crystal Palace Exhibition building and during their early years the club played at the FA Cup Final venue which was situated inside the historic Palace grounds.