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: location (proximity) 
Words: near, close, gated, bordering, on top of
answer:
gated


question:
Category: emotional status 
Words: forward, emotional state, melancholy, disgusted, down
answer:

forward