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'.
Input: Sentence: In school, Atta came across as very intelligent and reasonably pleasant, with an excellent command of the German language. 
Question: How long was Atta in the school?
Output:
No.