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.

Example Input: lionel scaloni (born 16 may 1978) is an argentine football player.
Example Output: lionel scaloni

Example Input: james newton howard (born june 9, 1951) is an american composer.
Example Output: james newton howard

Example Input: colonel archibald gracie iv (january 17, 1859 – december 4, 1912) was an american writer, amateur historian, real estate investor, and survivor of the sinking of the r.m.s titanic.
Example Output:
archibald gracie iv