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]: fire, blaze, water, flame, recruit
[EX A]: recruit

[EX Q]: horse, trap, tiger, sea turtle, fish
[EX A]: trap

[EX Q]: yard, meter, heel, foot, kilometer
[EX A]:
heel