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: louis meyers (1955 or 1956 – march 11, 2016) was a american festival organizer and co-founder of south by southwest.
Example Output: louis meyers

Example Input: ernest evans (born october 3, 1941) better known as chubby checker, is a pop singer from the united states.
Example Output: chubby checker

Example Input: vicki ann axelrad (also called vicki lawrence; born march 26 1949) is an american comedienne, actress and a singer.
Example Output:
vicki lawrence