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: x-rays are used in medical technology.
[A]: medical technology helps.


[Q]: Fact: gravity pulls objects towards planets.
[A]: gravity objects planets.


[Q]: Fact: an electron microscope is used for seeing very small objects by making them appear bigger.
[A]:
atoms are small.