instruction:
In this task, you are given a question and a corresponding answer. Your task is to generate a fact statement that is useful in answering the given question.
question:
Question: Octopuses excrete an ink as defense when? Answer: They're in danger.
answer:
ink is used for hiding from predators by octopuses


question:
Question: The population of plants will go down if? Answer: there's less liquid around.
answer:
as available water decreases , the population of plants will decrease


question:
Question: Which of these is usually green in color? Answer: Redwood National Park.
answer:

a forest environment is often green in color