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: a telephone is used for communication by humans over long distances.
Example Output: communication convey.

Example Input: Fact: Pedigrees are useful tools for studying inheritance patterns.
Example Output: inheritance animals.

Example Input: Fact: a mold spore has a negative impact on the respiratory system.
Example Output:
mold spore spreads.