Complex sentence: The European Cup (formerly known as the European Championship and European Nations Cup) is a rugby league football tournament for European nations that was first held in 1935, with England, Wales and France each playing each other once.
Split into simpler sentences: The European Cup (formerly known as the European Championship and European Nations Cup) is a rugby league football tournament for European nations that was first held in 1935. The tournament was first started in 1935, with England, Wales and France each playing each other once.