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:
canada day is a national and an official holiday in canada celebrating its anniversary of confederation.

Ex Output:
canada day


Ex Input:
anteaters are mammals of the family myrmecophagidae and the suborder vermilingua.

Ex Output:
anteater


Ex Input:
javron-les-chapelles is a commune of 1473 people (2006).

Ex Output:

javron-les-chapelles