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.

Input: Consider Input: Fact: if fossils of an animal or plant are found in a place then that animal or plant used to live in that place.

Output: fossil dinosaur.


Input: Consider Input: Fact: camouflage is used for protection by prey against predators.

Output: camouflage animals.


Input: Consider Input: Fact: the gravitational pull of the Moon on Earth 's oceans causes the tides.


Output: earth ocean.