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: lori wilson (february 15, 1937 – january 30, 2019) was an american lawyer and politician.
Example Output: lori wilson

Example Input: the sun belt conference is a group of college sports teams that play each other on the ncaa division i level.
Example Output: sun belt conference

Example Input: waste (or wastes) are unwanted or unusable materials.
Example Output:
waste