Given a statement and question, generate the answer to the question such that the answer is contained in the statement.

[Q]: statement: Octopuses spray a cloud for hiding from whales, question: What sprays a cloud for hiding whales?
[A]: Octopuses


[Q]: statement: Rain downwind from a coal-fired power plant is likely to transform the color of litmus paper from blue to red., question: What color is litmus paper likely to change from?
[A]: blue


[Q]: statement: Air pollution contains lung irritants., question: What does air pollution contain?
[A]:
lung irritants