Teacher: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".
Teacher: Now, understand the problem? Solve this instance: Process:  -Plants and animals long ago died -They are buried under layers of soil -Pressure builds over time -The remains liquefy -The carbon atoms rearrange to become a new substance.
 Question: What is the effect of there is widespread disease on more oil.?
Student:
for