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: sonar is used to find the location of an object.
[EX A]: Location of an object.

[EX Q]: Fact: sound can be used for communication by animals.
[EX A]: Sound is frequency.

[EX Q]: Fact: Cytokinesis is the final stage of cell division in eukaryotes as well as prokaryotes.
[EX A]:
Cytokinesis.