Complex sentence: Frank Pitchford is an English professional rugby league footballer who played in the 1950s, and 1960s, playing at representative level for Great Britain, and England, and at club level for Oldham, and Wigan as a, i.e. number 7.
Split into simpler sentences: Frank Pitchford is an English former professional rugby league footballer who played in the 1950s, and 1960s. He played at representative level for Great Britain, and England, and at club level for Oldham, and Wigan as a, i.e. number 7.