Complex sentence: Subsequently, Ireland Minister for the Tourism and Sport, Michael Ring, of his long concern of the safety aspect of the sport which he had written to 17 MMA promoters in Ireland where he expected MMA should adhere to the safety standards as apply in other sports.
Split into simpler sentences: Subsequently, Ireland Minister for the Tourism and Sport, Michael Ring, spoke of his long concern for the safety aspect of the sport. He had written to 17 MMA promoters in Ireland that he expected MMA should adhere to the same safety standards that apply in other sports.