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: the fallopian tubes are used in reproduction.
[EX A]: Fallopian tubes.

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

[EX Q]: Fact: Secondary meristem is located within and around the vascular tissues.
[EX A]:
Secondary meristem.