In this task, you are given a fact statement and question based on the fact. Your task is to generate the correct answer for the question. The answer needs to be generated using the context fact statement.
--------
Question: Fact: A bird is a pollinating animal. Question: Plants often use which enticing substance when attracting pollinators?

Answer: sweet things


Question: Fact: a plant 's roots slowly break down rocks as the roots grow. Question: A cypress tree's stout roots splitting asphalt is an example of?

Answer: weathering


Question: Fact: ice wedging is when ice causes rocks to crack by expanding in openings. Question: Water solidifies in crevices in the asphalt and splits it apart by?

Answer:
occupying more space