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:
the african golden cat ("profelis aurata") is a medium-sized cat.

Ex Output:
african golden cat


Ex Input:
the mini estadi (english: mini stadium) is the home stadium of fc barcelona b, the reserve team of fc barcelona.

Ex Output:
mini estadi


Ex Input:
the guineafowl are a family of birds.

Ex Output:

guineafowl