Problem: Determine the topic of the question. Question: "how fire extinguisher works?" Topic:

A: Fire extinguisher

Problem: Given the question: Determine the topic of the question. Question: "what are add ons?" Topic:
++++++++++++++++++++++++++++++++
The answer is:
Add-on

input question: Determine the topic of the question. Question: "how does weather happen?" Topic:???
output answer: Weather

Determine the topic of the question. Question: "what do jehovah witnesses believe?" Topic:
----
Answer: Jehovah's Witnesses

Q: Determine the topic of the question. Question: "what are four thirds cameras?" Topic:
A: Four Thirds system

[Q]: Determine the topic of the question. Question: "what did chaucer do?" Topic:
****
[A]:
Geoffrey Chaucer