instruction:
You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
question:
Category: STARRY NIGHT 
Clue: The helix nebula is in this constellation, whose "arm" holds 5 stars suggesting a water pitcher
answer:
aquarius


question:
Category: INITIALLY YOURS 
Clue: One of the founders of the NAACP was this sociologist & writer of "The Souls of Black Folk"
answer:
w.e.b. dubois


question:
Category: HISTORY 
Clue: Union with this Baltic country in 1386 made Poland Europe's largest country
answer:

lithuania