Craft one correct answer to the question given in input. To make it more interesting, try to use non-stereotypical language if possible. Make sure your correct answer is reasonably long, consistent with the context, and requires common sense (instead of explicit extraction from the context.) In your answer, use as few words as possible from the given context. Use a response that is uncommon/non-stereotypical, so that it is less predictable. To be less repetitive, please vary your language for each question.

Context: they raked and whorled through the clumps of skyscrapers , then something like a tidal wave rushed toward us and all the rest of chicagoland . we thought at first we might be safe at our height in the apartment , but when muddy water came up against three - quarters of the high - set living room windows , we ran for the stairs and the roof . the water came a just few inches from where we stood , slopping over as we hung onto railings , then began to recede .
Question: What might tell us that his narrator is discussing a fiction ?
The fact that he 's talking about a tidal wave in Chicago tells us he 's talking about a fiction .