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: Alternation of generations allows for both asexual and sexual reproduction.
[EX A]: alteration of generations.

[EX Q]: Fact: satellites are used to take images from space.
[EX A]: images from space.

[EX Q]: Fact: Protozoa can be classified on the basis of how they move.
[EX A]:
Protozoa.