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: an electron microscope is used for seeing very small objects by making them appear bigger.

A: atoms are small.
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Q: Fact: Bladder infections can be treated with antibiotics prescribed by a doctor.

A: antibiotics are made from.
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Q: Fact: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells.

A:
abnormal mass cells.
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