Complex sentence: Harry Rees was a Welsh professional rugby league footballer who played in the 1920s, playing at representative level for Wales, and at club level for Batley, as a, i.e. number 3 or 4.
Split into simpler sentences: Harry Rees was a Welsh professional rugby league footballer who played in the 1920s. He played at representative level for Wales, and at club level for Batley, as a, i.e. number 3 or 4.