input question: Determine the topic of the question. Question: "what are four thirds cameras?" Topic:???
output answer: Four Thirds system

input question: Determine the topic of the question. Question: "Who is the rap singer in right round with kesha in the background? *(dancer)*?" Topic:???
output answer: Right Round

input question: Determine the topic of the question. Question: "who wrote the song feelin alright?" Topic:???
output answer: Feelin' Alright

input question: Determine the topic of the question. Question: "how is hydrogen produced?" Topic:???
output answer:
Hydrogen production