Complex sentence: Alan Whittle is a professional rugby league footballer who played in the 1960s and 1970s, playing at club level for St Helens, Barrow, Warrington and Wigan as a, or, i.e. number 2 or 5,3 or 4,6, or 7.
Split into simpler sentences: Alan Whittle is a former professional rugby league footballer who played in the 1960s and 1970s. He played at club level for St Helens, Barrow, Warrington and Wigan as a, or, i.e. number 2 or 5,3 or 4,6, or 7.