input question: Determine the topic of the question. Question: "who is E from entourage?" Topic:???
output answer: Eric Murphy

Determine the topic of the question. Question: "what came first army or air force?" Topic:
----
Answer: United States Army Air Forces

Q: Determine the topic of the question. Question: "when does the electoral college votes?" Topic:
A: Electoral College (United States)

Question: Determine the topic of the question. Question: "what is steam by valve corporation?" Topic:
Answer: Steam (software)

[Q]: Determine the topic of the question. Question: "what is prefix phone number?" Topic:
****
[A]: Telephone prefix

Problem: Given the question: Determine the topic of the question. Question: "what composer used sound mass?" Topic:
++++++++++++++++++++++++++++++++
The answer is:
Sound mass