Complex sentence: Richard "Dick" Gemmell is a professional rugby league footballer who played in the 1960s, playing at representative level for Great Britain, and Lancashire, and at club level for Leeds, and Hull, as a, i.e. number 3 or 4.
Split into simpler sentences: Richard "Dick" Gemmell is a professional rugby league footballer who played in the 1960s. He played at representative level for Great Britain, and Lancashire, and at club level for Leeds, and Hull, as a, i.e. number 3 or 4.