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: Blood type is important for medical reasons.

Output: blood type a b o.


Input: Consider Input: Fact: Babies that are very large or very small at birth are less likely to survive.

Output: babies premature small.


Input: Consider Input: Fact: Differentiation is the process by which unspecialized cells become specialized.


Output: cell Differentiation.