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.

Input: Consider Input: the 193940 nhl season was the 23rd season for the national hockey league.

Output: 193940 nhl season

Input: Consider Input: tactopods are members of a proposed clade of ecdysozoans called tactopoda.

Output: tactopoda

Input: Consider Input: giandomenico boncompagni (13 may 1932 16 april 2017), best known as gianni boncompagni, was an italian television and radio presenter, television director, screenwriter and lyricist.
Output: gianni boncompagni