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.

[EX Q]: Question: A blackberry bush needing to photosynthesize would have difficulty? Answer: at night.
[EX A]: darkness has a negative impact on photosynthesis

[EX Q]: Question: If a sand grain is in a tree house unexpectedly, a likely culprit responsible for its movement is? Answer: gales.
[EX A]: wind carries sand from one place to another place

[EX Q]: Question: Cola and mentos combined will? Answer: expand quickly.
[EX A]:
combining two substances chemically causes chemical reactions