Input question: Who patented the 'Zip fastener' in 1893?

Output answer: whitcomb judson

Input question: What capital city was devastated by the 2010 Haiti earthquake?

Output answer: port au prince

Input question: Which famous Australian singer had a dessert named after her

Output answer: nellie melba

Input question: What is the busiest airport in England?

Output answer:
london heathrow