Complex sentence: Ronald Lewis is a professional rugby league footballer who played in the 1940s, and 1950s, playing at representative level for Yorkshire and at club level for Castleford, as a fullback, i.e. number 1.
Split into simpler sentences: Ronald Lewis is a former professional rugby league footballer who played in the 1940s, and 1950s. He played at representative level for Yorkshire and at club level for Castleford, as a fullback, i.e. number 1.