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: Plants that are adapted to very dry environments are called xerophytes.
Plants that are adapted to very dry environments are called xerophytes.

Fact: Adult echinoderms have radial symmetry.
echinoderm is starfish.

Fact: Birds have a large brain relative to the size of their body.

bird brain body.

