Complex sentence: David Booysen was a South African Afrikaner professional rugby league footballer who played in the 1920s, playing at representative level for Other Nationalities, and at club level for Wigan, as a, or, i.e. number 3 or 4, or 7.
Split into simpler sentences: David Booysen was a South African Afrikaner professional rugby league footballer who played in the 1920s. He played at representative level for Other Nationalities, and at club level for Wigan, as a, or, i.e. number 3 or 4, or 7.