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".

[Q]: Process:  -The bird picks a tree -The bird collects twigs and other refuse -The bird makes a flat base with twigs -The bird makes sides with twigs and other things -The bird adds softer material to the inside -The nest is done.
 Question: What is the effect of lower human populations on there are fewer trees.?
[A]: against


[Q]: Process:  -You eat food -Your stomach digests the food -Sugars from food enter your bloodstream -Insulin helps turn sugars into energy -Insulin helps your body store the energy in fat, muscle and liver cells -
 Question: What is the effect of the person needs to change the on the person is not hungry.?
[A]: against


[Q]: Process:  -The gravity of the sun pulls its mass inward -There is a lot of pressure on the Sun -The pressure forces atoms of hydrogen to fuse together in nuclear reactions -The energy from the reactions gives off different kinds of light -The light travels to the Earth.
 Question: What is the effect of less gravity to pull on less sunlight arriving at the earth.?
[A]:
for