Instructions: In this task you will be given a process, and a question. The process contains a sequence of steps that happen in order. The question asks about the effect of a certain event on another event. If the first event has a positive effect on the second event, answer with "for", if it has a negative effect, answer with "against". If there's no causal relationship between the two, answer with "none".
Input: Process:  -Acid rain is produced by chemicals that reach into the atmosphere -Falls onto the ground -The acid rain starts scouring rocks -Destroys vegetation -The lack of vegetation alters the surrounding environment.
 Question: What is the effect of humans stop producing so many chemicals on more chemicals reach the atmosphere.?
Output:
against