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 consistency, answers should be in all lower cased letters.

Category: ALL IN THE FAMILY 
Clue: The rock & largemouth black types of this are both in the sunfish family
bass

Category: WHAT ARE YOU AFRAID OF? 
Clue: Papyrophobia is the fear of this--touching it, seeing it, being cut by it
paper

Category: LET'S GET SIRIUS 
Clue: In 1844 Friedrich Bessel discovered that Sirius was one of these, also called a double or twin star

a binary

