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.

Input: Consider Input: Question: Which is the likeliest part of a pencil to have been mined? Answer: the lead.

Output: pencil lead contains mineral graphite


Input: Consider Input: Question: A person cuts down their neighbor's tree without permission. The neighbor who lost the tree is upset, and sues for the cost of the tree, which depends on the age of the tree at the time of cutting. The tree age is determined by? Answer: number of circles.

Output: a tree growing a tree-growth ring occurs once per year


Input: Consider Input: Question: The Earth receives heat from:? Answer: the star around which it orbits.


Output: a planet is exposed to the heat of the star around which it revolves