Complex sentence: It was the 75th running of the Cheltenham Gold Cup and was won by the pre-race favourite Best Mate, ridden by Jim Culloty and trained by Henrietta Knight.
Split into simpler sentences: It was the 75th running of the Cheltenham Gold Cup, and it was won by the pre-race favourite Best Mate. The winner was ridden by Jim Culloty and trained by Henrietta Knight.