input question: Determine the topic of the question. Question: "how many seasons heroes?" Topic:???
output answer: Heroes (TV series)

input question: Determine the topic of the question. Question: "what is the source of geothermal energy?" Topic:???
output answer: Geothermal energy

input question: Determine the topic of the question. Question: "what makes a dwarf planet?" Topic:???
output answer: Dwarf planet

input question: Determine the topic of the question. Question: "where is the human thigh located??" Topic:???
output answer:
Human leg