Part 1. Definition
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.
Part 2. Example
Sentence: Jack played basketball after school, after which he was very tired. 
Question: How long did Jack play basketball?
Answer: 1 hour.
Explanation: Typically we play basketball for a couple of hours. So any answer in that range is reasonable.
Part 3. Exercise
Sentence: But in between quippy posters and ads for the film, which is a sequel to 2011's blockbuster "The Muppets" with Jason Segel, there are ingenious "selfies" from the Muppets crew. 
Question: How long did it take to make "The Muppets" movie?
Answer:
15 months.