context: Dubai World Cup horse racing was launched for the first time 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 Cup