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: boxing terminology 
Words: canvas, tko, deck, joker, fight
answer:
joker


question:
Category: corporate 
Words: solid, sustainability, streamline, firm, private
answer:
solid


question:
Category: animal 
Words: flap, pounce, fly, run, cockroach
answer:

flap