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:  -Bats and other animals produce a high-pitched tone -The sound travels in waves, as sound does -The sound "bounces" off of a nearby object -The sound wave returns to the bat -The bat hears the echoed sound -Folds in the bat's ear and adaptations in the bat's brain enable it to determine the size, shape, and position of the other object via the properties of the returned sound waves -Other animals use echolocation in generally similar ways -
 Question: What is the effect of the air is in an enclosed airtight area on bats produce a high-pitched tone.?
[A]: none


[Q]: Process:  -A bird lays an egg -The egg hatches into a baby bird -Baby bird eats -Grows into an adult bird -The bird finds a mate -The pair build a nest -The birds lay eggs.
 Question: What is the effect of the owl did not have any  birth defects on more birds.?
[A]: none


[Q]: Process:  -The blood sugar drops in a body -Cells in the pancrease release glucagon -The liver in response turns the glucagon into glucose -And releases it into the blood -The blood sugar levels are restored.
 Question: What is the effect of more glucose released on less glucose in blood.?
[A]:
against