In this task, we ask you to write an answer to a question about the events that may happen before or after a certain event. For example, "earning money" usually appears before "spending money". 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: Boston Center TMU [Traffic Management Unit], we have a problem here. 
Question: What happened after the problem was discovered?

A: it was fixed.
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Q: Sentence: Once we arrive, the castle looked much bigger than we had imagined. 
Question: What happens now that you've seen it?

A: we are given a tour.
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Q: Sentence: At Corinth, Philip established a "Hellenic Alliance" (modeled on the old anti-Persian alliance of the Greco-Persian Wars), which included most Greek city-states except Sparta. 
Question: What happened before the alliance took place?

A:
the city revolted.
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