Detailed Instructions: 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: Atta and Omari boarded a 6:00 A.M. flight from Portland to Boston's Logan International Airport. 
Question: How many times a month do they fly on a plane?
A:
No.