In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Input: Consider Input: How does a chestnut tree form its heartwood?, Context: The term heartwood derives solely from its position and not from any vital importance to the tree. This is evidenced by the fact that a tree can thrive with its heart completely decayed. Some species begin to form heartwood very early in life, so having only a thin layer of live sapwood, while in others the change comes slowly. Thin sapwood is characteristic of such species as chestnut, black locust, mulberry, osage-orange, and sassafras, while in maple, ash, hickory, hackberry, beech, and pine, thick sapwood is the rule. Others never form heartwood.

Output: the change comes slowly


Input: Consider Input: For what reason would it be easy to burn a chair?, Context: Wood has always been used extensively for furniture, such as chairs and beds. It is also used for tool handles and cutlery, such as chopsticks, toothpicks, and other utensils, like the wooden spoon.

Output: Wood


Input: Consider Input: What links all these places together?, Context: Education in Northern Ireland differs slightly from systems used elsewhere in the United Kingdom, but it is more similar to that used in England and Wales than it is to Scotland.


Output: United Kingdom