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.
--------
Question: Fact: producing thrust causes something to move.

Answer: engines produce thrust.


Question: Fact: using cell phones can cause people to become distracted.

Answer: cell phone communicate.


Question: Fact: Mutations that lead to cancer usually occur in genes that control the cell cycle.

Answer:
cancer leukemia.