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: Birth may be followed by a period of parental care of the offspring.
birth baby.

Fact: Prokaryotes are single-celled organisms that lack a nucleus.
Prokaryotes.

Fact: Frogs also have a larynx, or voice box, to make sounds.

Frog croak.