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: elements 
Words: ban, fire, combustion, ground, flame
answer:
ban


question:
Category: corporate 
Words: unyielding, concerted, firm, combined, united
answer:
unyielding


question:
Category: poker 
Words: board, queen, deck, level, draw
answer:

level