TASK DEFINITION: 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.
PROBLEM: veronika marchenko is a russian activist.

SOLUTION: veronika marchenko

PROBLEM: 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.

SOLUTION: archibald gracie iv

PROBLEM: burns night is the day (and night) that the life of robert burns is commemorated, particularly in scotland.

SOLUTION:
burns night