Complex sentence: It was the 73rd running of the Prix de l'Arc de Triomphe and was won by Carnegie, ridden by Thierry Jarnet and trained by André Fabre.
Split into simpler sentences: It was the 73rd running of the Prix de l'Arc de Triomphe, and it was won by Carnegie. The winner was ridden by Thierry Jarnet and trained by André Fabre.