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.

Input: Consider Input: luosto is a hill in finnish lapland, in the sodankylä municipality.

Output: luosto


Input: Consider Input: lee soo-young (born lee ji-yeon april 12, 1979) is a korean ballad singer.

Output: lee soo-young


Input: Consider Input: vichy is a "commune" in central france, in the auvergne-rhône-alpes region, along the allier river.


Output: vichy