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.

Ex Input:
aaron downey (born august 27, 1974 in shelburne, ontario) is a canadian retired professional ice hockey right winger that played 10 seasons in national hockey league.

Ex Output:
aaron downey


Ex Input:
yoshihiro uchimura (born 24 august 1984) is a japanese football player.

Ex Output:
yoshihiro uchimura


Ex Input:
jim backus was the voice of mr. magoo.

Ex Output:

mr. magoo