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:
absolute truth is something that is true at all times and in all places.

Ex Output:
absolute truth


Ex Input:
a brinicle is a column of ice that forms in seawater.

Ex Output:
brinicle


Ex Input:
elaine stritch (february 2, 1925 – july 17, 2014) was an american actress and vocalist.

Ex Output:

elaine stritch