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: THE ELEMENTS 
Clue: Most fluorescent lights are filled with a combination of argon & this element, Kr
answer:
krypton


question:
Category: INVENTIONS 
Clue: The typewriter was 1st mass-produced in the 1870s by this gun manufacturer
answer:
remington


question:
Category: 2 VS, PLEASE 
Clue: Last name of the 1904 Nobel Prize winner for Physiology or Medicine, dog
answer:

pavlov