Definition: 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: Although disruption efforts around the world had achieved some successes, the core of  Bin Laden's organization remained intact. 
Question: How often were disruption efforts made?
Output:
No.