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.

[EX Q]: Fact: Food consists of organic molecules that store energy in their chemical bonds.
[EX A]: beef food.

[EX Q]: Fact: faulting of rock in Earth 's crust causes earthquakes.
[EX A]: Earthquakes are shaking.

[EX Q]: Fact: heavy rains cause flooding.
[EX A]:
flood rain.