Complex sentence: Albert "Bert" Green was a Welsh professional rugby league footballer of the 1920s playing at representative level for Wales, and at club level for Pontypridd, as a, i.e. number 8 or 10, during the era of contested scrums.
Split into simpler sentences: Albert "Bert" Green was a Welsh professional rugby league footballer of the 1920s. He played at representative level for Wales, and at club level for Pontypridd, as a, i.e. number 8 or 10, during the era of contested scrums.