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.

Input: Consider Input: Fact: a telephone is used for communication by humans over long distances.

Output: communication convey.


Input: Consider Input: Fact: All plants have a characteristic life cycle that includes alternation of generations.

Output: alternation generations.


Input: Consider Input: Fact: Sporangia produce spores that develop into tiny, heart-shaped gametophytes.


Output: gametophytes.