Complex sentence: Tony Thomas is a former professional rugby league footballer who played in the 1950s, 1960s, and 1970s, playing at club level for Wakefield Trinity (Heritage 659), and Castleford, as a, i.e. number 3 or 4.
Split into simpler sentences: Tony Thomas is a former professional rugby league footballer who played in the 1950s, 1960s, and 1970s. He played at club level for Wakefield Trinity (Heritage 659), and Castleford, as a, i.e. number 3 or 4.