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.

Fact: Some viruses can cause cancer.
VACCINATION CERVICAL.

Fact: Lions live in social groups called prides.
Lion.

Fact: a switch is used to start the flow of current in an electrical circuit.

Electrical circuits are.