In this task, you need to write a topic word from the given fact. The topic word must have at least one word overlap with the given fact. The topic word often involves adding a new word from a related concept. In your topic word, use at least one word from the given fact. Topic words with two or more words work best.

[EX Q]: Fact: high temperatures can cause an object to combust.
[EX A]: Combustion.

[EX Q]: Fact: the Earth being tilted on its rotating axis causes seasons.
[EX A]: Seasons are annual.

[EX Q]: Fact: if a thermal conductor is exposed to a source of heat then that conductor may become hot.
[EX A]:
heat sun.