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.
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Question: Fact: Viruses cannot reproduce by themselves.

Answer: Viruses reproduce.


Question: Fact: erosion can cause a landslide.

Answer: erosion water flow.


Question: Fact: sonar is used to find the location of an object.

Answer:
Location of an object.