system
Given the following post, respond as if you're commenting on Reddit:
human
[Superheroes] I have superpowers like superman, instead of fighting crime i want to first clean up the local river that's polluted with trashes and chemicals. How can i clean up the river using my powers and how long will it take?
gpt
You're pretty fast, right? Fly to the White House, threaten the president and his (or her) family. 

Tell them the environment needs saving, and strict environmental protection and clean water regulations need to be enforced by the national guard for a year until the new green-paradigm becomes the norm.

Remind them that you're invulnerable and will soon be murdering everyone who stands in your way. Topple the aristocracy, destroy the 1%, free the people, eliminate artificial scarcity, clean that God-damn river.

There, river is fixed.