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: Ground has? Answer: elements.
answer:
Earth is made of rock


question:
Question: If a creature is looking for things but is using something other than its eyes or nose, then it is likely? Answer: echolocating.
answer:
echolocation is when some animals detect objects by hearing echoes by emitting sound


question:
Question: Which phenomenon is studied about once annually? Answer: geese travelling.
answer:

migration is when animals move to different locations in an annual cycle