instruction:
Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
question:
Category: animal 
Words: cockroach, leap, drive, swim, fly
answer:
drive


question:
Category: bird 
Words: dump truck, tackle, crane, hoist, davit
answer:
dump truck


question:
Category: weather 
Words: brisk, flaxen, raining, fair, tangle
answer:

flaxen