Complex sentence: William Hargrave was a professional rugby league footballer who played in the 1920s, and 1930s, playing at representative level for Yorkshire, and at club level for Castleford, as a, i.e. number 2 or 5.
Split into simpler sentences: William Hargrave was a professional rugby league footballer who played in the 1920s, and 1930s. He played at representative level for Yorkshire, and at club level for Castleford, as a, i.e. number 2 or 5.