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: Flagella help prokaryotes move.

Output: Flagella are.


Input: Consider Input: Fact: Bird beaks are generally adapted for the food they eat.

Output: adaptations are inherited.


Input: Consider Input: Fact: a flashlight requires a source of electricity to produce light.


Output: A flashlight is portable light.