The fact is that the "response to the question" only actually has two positions: Yes I believe that proposition or no, I do not believe that proposition. You either believe it is true or you do not believe it is true.
Ah but there is also: the proposition is undefined and/or incoherent. Many agnostics can't choose ontological sides because of this. They feel doing so would be dishonest without first determining the epistemological question. (Personally I just haven't a clue what "god" is supposed to actually mean.)
Further since we are dealing with humans there is: your question fails to elicit a response from me. It just isn't important enough to care about and form a belief.
Finally there is: belief is irrelevant to existential questions. Taking an ontological stance about an existential question is a complete and utter waste of time. Its completely futile and irrelevant. Did I mention irrelevant? How about futile? Disbelieve a rock an it will rockily ignore you. Believe you have the hope diamond in your pocket as hard as you please and it still won't be there. Belief just doesn't matter so who cares?
So basically its a simple yes or no question only if you ignore every one else who has a non yes or no response, which seems a bit disingenuous.