Input question: Which fish has a curling prehensile tail?

Output answer: sea horse

Input question: Janet Street Porter was once the editor of which British newspaper?

Output answer: independent on sunday

Input question: Which band performed at the Australian Formula One Grand Prix in Melbourne, Australia in 2009 and in the halftime show of the Super Bowl in Miami Gardens, Florida in 2010?

Output answer: who

Input question: What name is given to the naturally occurring alloy of gold and silver, often used in bygone days in the manufacture of coins?

Output answer:
electrum