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:
valbirse is a new municipality of the administrative district of jura bernois in the canton of berne in switzerland.

Ex Output:
valbirse


Ex Input:
laurie cunningham is a former football player.

Ex Output:
laurie cunningham


Ex Input:
an onomatopoeia is a word that sounds like the sound it means: words that imitate particular sounds.

Ex Output:

onomatopoeia