context: Dubai World Horse Racing Cup was first launched in 1996 in Nad Al Sheba Horse Racing Field in Dubai. It is the richest race in the world with a grand prize of $ 10 million. [1] King Allen Poulsen's cigar cigarette won the first race. This race was founded by Sheikh Mohammed bin Rashid Al Maktoum.
question: What is the biggest prize in the horse competition?
answers.text: Dubai World Horse Racing Cup