instruction:
Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
question:
warm, optimist, hot, relaxing, cool
answer:
optimist


question:
early, water, delayed, history, current
answer:
water


question:
sustainability, firm, amalgamated, combined, rigged
answer:

rigged