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.

Q: Fact: a graduated cylinder is used to measure volume of a liquid.

A: a graduated cylinder is used to measure volume of a liquid.
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Q: Fact: boiling means change from a liquid into a gas by adding heat energy.

A: boiling change.
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Q: Fact: a generator converts kinetic energy into electrical energy.

A:
battery.
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