TASK DEFINITION: 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.
PROBLEM: Fact: uneven heating of the Earth 's surface cause wind.

SOLUTION: heating is warming.

PROBLEM: Fact: a toaster converts electrical energy into heat energy for toasting.

SOLUTION: bread toast.

PROBLEM: Fact: Playing is one way mammals and other animals learn how to behave.

SOLUTION:
animal learn behave train.