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'.

Input: Consider Input: 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?

Output: No.

Input: Consider Input: Sentence: In Colombia, the drug-financed guerrillas trying to seize the country and destroy democracy include M-19, which Castro has clearly backed.
Question: Is Colombia's democratic government stable?

Output: No.

Input: Consider Input: Sentence: They first traveled by plane around Europe, where they saw many different people and sights.
Question: What happened after the planes would land.?
Output: No.