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: a flower 's purpose is to produce seeds.

SOLUTION: animals seeds.

PROBLEM: Fact: water vapor cooling causes that water vapor to condense.

SOLUTION: fogged mirror condensation.

PROBLEM: Fact: a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone.

SOLUTION:
carbonic acid.