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:
anne osborn krueger (; born february 12, 1934) is an american economist.

Ex Output:
anne osborn krueger


Ex Input:
carolee schneemann (october 12, 1939 – march 6, 2019) was an american visual experimental artist.

Ex Output:
carolee schneemann


Ex Input:
abraxas grossulariata is a moth of the family geometridae.

Ex Output:

abraxas grossulariata