Complex sentence: The Bet365 Gold Cup meeting at Sandown Park combines both National Hunt and flat racing, and includes the Sandown Mile and the Sandown Classic Trial, both also currently sponsored by Bet365.
Split into simpler sentences: The Bet365 Gold Cup meeting at Sandown Park combines both National Hunt and flat racing. Other races at the meeting include the Sandown Mile and the Sandown Classic Trial, both of which are also presently sponsored by Bet365.