Complex sentence: It was the 78th running of the Cheltenham Gold Cup and was won by War of Attrition, ridden by Conor O'Dwyer and trained by Mouse Morris.
Split into simpler sentences: It was the 78th running of the Cheltenham Gold Cup, and it was won by War of Attrition. The winner was ridden by Conor O'Dwyer and trained by Mouse Morris.