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: Animals are a kingdom of multicellular eukaryotes.

Output: Animals kingdom.


Input: Consider Input: Fact: Immunity results from immunization.

Output: immunization vaccine.


Input: Consider Input: Fact: Birds have a large brain relative to the size of their body.


Output: bird brain body.