Input question: What nut is a typical ingredient in pesto?

Output answer: pine nut

Input question: Pato, a game played on horseback, is the national sport of which South American country?

Output answer: argentina

Input question: In England, which fish, when caught in a river, traditionally belongs to the Sovereign?

Output answer: sturgeon

Input question: In the 2010 World Cup Final, Jo'bulani was the?

Output answer:
ball