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:
buick rendezvous was a midsize crossover suv.

Ex Output:
buick rendezvous


Ex Input:
louise leakey (born 21 march 1972) is a kenyan paleontologist.

Ex Output:
louise leakey


Ex Input:
maicon douglas sisenando (born 26 july 1981) is a brazilian football player.

Ex Output:

maicon douglas sisenando