Complex sentence: Harry Markham is an English professional rugby league footballer who played in the 1950s, playing at representative level for England, and at club level for Hull, as a, i.e. number 11 or 12 during the era of contested scrums.
Split into simpler sentences: Harry Markham is an English former professional rugby league footballer who played in the 1950s. He played at representative level for England, and at club level for Hull, as a, i.e. number 11 or 12 during the era of contested scrums.