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: The face of the sphinx has changed from? Answer: wearing away.
wind and rain cause erosion

Question: I need electrical energy to? Answer: cook some bread.
a light bulb requires electrical energy to produce light

Question: What environment is often green? Answer: tree zones.
a forest environment is often green in color