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.

Input: Consider Input: Sentence: On London's Stock Exchange, Reuters shares rose five pence to 913 pence ($14.43). 
Question: How long is the stock exchange open?

Output: it's open for 8 hours a day.


Input: Consider Input: Sentence: It's hail crackled across the comm, and Tara spun to retake her seat at the helm. 
Question: How long was the storm?

Output: 6 hours.


Input: Consider Input: Sentence: Separately, Citadel posted a third-quarter net loss of $2.3 million, or 68 cents a share, versus net income of $5.3 million, or $1.61 a share, a year earlier. 
Question: How many months were in last quarter?


Output: 3.


