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: YOUR NUMBER'S UP 
Clue: NFL tight ends wear jerseys with number in this range
answer:
the 80s


question:
Category: SPORTS 
Clue: Football's imaginary plane which neither team may cross until the ball is snapped
answer:
the line of scrimmage


question:
Category: "G" WHIZ 
Clue: The kind of knot you'd expect your mother's mother to tie
answer:

a granny knot