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.

Example Input: Fact: Sweating reduces body heat.
Example Output: "body heat" reduces sweating.

Example Input: Fact: Fission takes place when an animal divides into two parts.
Example Output: animal  mitosis.

Example Input: Fact: an electric stove transforms electrical energy to heat energy.
Example Output:
electric stove energy.