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: rudolf kargus (born 15 august, 1952) is a former german football player.

Output: rudolf kargus

Input: Consider Input: gauchin-verloingt is a commune.

Output: gauchin-verloingt

Input: Consider Input: new caledonia (; popular name: "le caillou") is a ""sui generis" collectivity" (in practice an overseas territory) of france, made up of a main island ("grande terre") and several smaller islands.
Output: new caledonia