Complex sentence: William "Bill" Martin is a professional rugby league footballer who played in the 1960s, playing at representative level for Great Britain, and at club level for Workington Town, as a, i.e. number 8 or 10, during the era of contested scrums.
Split into simpler sentences: William "Bill" Martin is a former professional rugby league footballer who played in the 1960s. He played at representative level for Great Britain, and at club level for Workington Town, as a, i.e. number 8 or 10, during the era of contested scrums.