Complex sentence: Joseph "Joe" Mahoney is a Welsh professional rugby league footballer who played in the 1940s, and 1950s, playing at representative level for Wales, and at club level for Oldham, and Dewsbury, as a, i.e. number 3 or 4.
Split into simpler sentences: Joseph "Joe" Mahoney is a Welsh former professional rugby league footballer who played in the 1940s, and 1950s. He played at representative level for Wales, and at club level for Oldham, and Dewsbury, as a, i.e. number 3 or 4.