In this task, we ask you to write an answer to a question that involves “event duration", based on a given sentence. Here, event duration is defined as the understanding of how long events typically last. For example, “brushing teeth”, usually takes a few minutes. Note that a lot of the questions could have more than one correct answer. We only need a single most-likely answer. Please try to keep your "answer" as simple as possible. Concise and simple "answer" is preferred over those complex and verbose ones.

[Q]: Sentence: After the second World Trade Center crash, Boston Center managers recognized that both aircraft were transcontinental 767 jetliners that had departed Logan Airport. 
Question: How long did it take Boston Center managers to recognize the jetliners?
[A]: an hour.


[Q]: Sentence: Then the green ball told the orange ball that blue ball was stupid. 
Question: How long was the green ball talking to the orange ball?
[A]: 15 seconds.


[Q]: Sentence: Meridian National Corp. said it sold 750,000 shares of its common stock to the McAlpine family interests, for $1 million, or $1.35 a share. 
Question: How long did it take for Meridian National Corp. to sell the shares?
[A]:
one night.


