The answer will be 'yes' if the provided sentence contains an explicit mention that answers the given question. Otherwise, the answer should be 'no'. Instances where the answer is implied from the sentence using "instinct" or "common sense" (as opposed to being written explicitly in the sentence) should be labeled as 'no'.
Q: Sentence: In the aftermath of Massaga and Ora, numerous Assakenians fled to the fortress of Aornos. 
Question: How long did it take the Assakenians to get to the fortress?
A: 
No.