Teacher: In this task, we ask you to write an implausible 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. Even though there exist multiple wrong answers, we only need a single wrong answer. Please try to keep your "answer" as simple as possible. Concise and simple "answer" is preferred over those complex and verbose ones.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Sentence: Jack played basketball after school, after which he was very tired. 
Question: How long did Jack play basketball?
Solution: 22 hours.
Reason: Typically we play basketball for a couple of hours. So any answer beyond that range is unlikely.

Now, solve this instance: Sentence: Like all energy, gravitational potential energy has the ability to do work. 
Question: How long does it take for gravitational potential energy to do work?
Student:
900 years.