Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Example Input: ans is a municipality in the belgian province of liège.
Example Output: ans

Example Input: renty is a commune.
Example Output: renty

Example Input: jean simmons (january 31, 1929 - january 22, 2010) was an anglo-american actress.
Example Output:
jean simmons