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.

Ex Input:
Sentence: Remembering the "we have some planes" remark, Boston Center guessed that Delta 1989 might also be hijacked. 
Question: How long was the Delta 1989 hijacked?

Ex Output:
2 hours.


Ex Input:
Sentence: He was asked to lend his support by writing a letter, with Szilard, to President Roosevelt, recommending the U.S. pay attention and engage in its own nuclear weapons research. 
Question: How long did it take him to write the letter?

Ex Output:
15 minutes.


Ex Input:
Sentence: After dinner, he went to look for Max one last time before he had to take a bath and go to bed. 
Question: How much time did he spend having dinner?

Ex Output:

half an hour.


