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.

[EX Q]: impartial, fair, equitable, level, ok
[EX A]: level

[EX Q]: lifeline, knockout, deck, punch, tko
[EX A]: lifeline

[EX Q]: tropical, cool, positive, funny, classy
[EX A]:
tropical