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: police academy: the series, also known as police academy: the animated series, is an popular 1988 american animated television series based on the "police academy" series of films.
Example Output: police academy: the animated series

Example Input: leni robredo (born april 23, 1965) is a filipina lawyer and politician.
Example Output: leni robredo

Example Input: jean-claude boulard (28 march 1943 1 june 2018) was a french politician.
Example Output:
jean-claude boulard