What is the Big Bang Theory?
user
I’m not sure what you mean by the Big Bang Theory.  I’m not sure if you’re asking for a theory about the “big bang” or about the “big bang theory”, or both.
assistant
What is the Big Bang Theory?
user
I’m not sure what you mean by the Big Bang Theory.  I’m not sure if you’re asking for a theory about the “big bang” or about the “big bang theory”, or both.
assistant
What is the Big Bang Theory?