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: When doing experiments? Answer: guard against spilling hydrogen chloride.
[EX A]: chemical splashing sometimes occurs during experiments

[EX Q]: Question: Light has the inability to shine through what? Answer: solid wood.
[EX A]: no light shines through an opaque object

[EX Q]: Question: The purpose of bird feathers, especially down, is to? Answer: retain body temps.
[EX A]:
down feathers are a thermal energy insulator