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: competition may cause animals to fight towards members of their own species.
competition animals food.

Fact: an incandescent light bulb converts electricity into light by sending electricity through a filament.
electricity batteries.

Fact: Amphibians are also important predators.

amphibian predator.