What causes water to come out of the sky?
Options:
- ocean
- thunderstorm
- lake
- restaurant
- enema
Let's think now! Step-by-step reasoning:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Thunderstorm occurs in the sky. Thunderstorm causes water to come out of the sky.
So, the final answer is thunderstorm.