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: tronchoy is a commune.

Output: tronchoy


Input: Consider Input: the boeing monomail was a monoplane instead of a biplane.

Output: boeing monomail


Input: Consider Input: the national museum of modern art, tokyo (東京国立近代美術館, tōkyō kokuritsu kindai bijutsukan) or momat is one of the major art museums in japan.


Output: national museum of modern art, tokyo