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 seismometer is used to measure the strength or magnitude of an earthquake.
[A]: earthquake cause.


[Q]: Fact: a light bulb requires electrical energy to produce light.
[A]: coal can be used to create electricity.


[Q]: Fact: Most pituitary hormones control other endocrine glands.
[A]:
Endocrine glands are.