input question: Determine the topic of the question. Question: "What Is Benzene Used For?" Topic:???
output answer: Benzene

input question: Determine the topic of the question. Question: "when did egg mcmuffin get invented?" Topic:???
output answer: McMuffin

input question: Determine the topic of the question. Question: "what was the date of pearl harbor?" Topic:???
output answer: Attack on Pearl Harbor

input question: Determine the topic of the question. Question: "who won fifa world cup 2010?" Topic:???
output answer:
2010 FIFA World Cup