input question: What is the question to: "It is mainly used as a precursor to heavy chemicals, such as ethylbenzene and cumene , which are produced on a billion kilogram scale."? The topic is Benzene.???
output answer: "What Is Benzene Used For?"

input question: What is the question to: "The Egg McMuffin is the signature breakfast sandwich; it was invented by the late McDonald's franchisee Herb Peterson in the late 1960s and was introduced nationwide in 1972."? The topic is McMuffin.???
output answer: "when did egg mcmuffin get invented?"

input question: What is the question to: "The attack on Pearl Harbor (called Hawaii Operation or Operation AI by the Japanese Imperial General Headquarters (Operation Z in planning) and the Battle of Pearl Harbor) was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor , Hawaii, on the morning of December 7, 1941 (December 8 in Japan)."? The topic is Attack on Pearl Harbor.???
output answer: "what was the date of pearl harbor?"

input question: What is the question to: "In the final, Spain , the European champions , defeated third-time finalists the Netherlands 10 after extra time , with Andres Iniesta 's goal in the 116th minute giving Spain their first world title, becoming the eighth nation to win the tournament, and the first European nation to win the tournament outside its home continent."? The topic is 2010 FIFA World Cup.???
output answer:
"who won fifa world cup 2010?"