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: cycles of freezing and thawing water cause ice wedging.
[EX A]: freezing thawing ice.

[EX Q]: Fact: a thermometer is used to measure temperature.
[EX A]: Temperature derermine weather.

[EX Q]: Fact: Yeast reproduce asexually by budding.
[EX A]:
Yeast.