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.

[Q]: 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.
[A]: archibald gracie iv


[Q]: the arrondissement of auxerre is an arrondissement of france.
[A]: arrondissement of auxerre


[Q]: khoo kay kim (; 28 march 1937 – 28 may 2019) was a malaysian historian.
[A]:
khoo kay kim