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]: invent, smuggled, smear, fudge, pie
[EX A]: pie

[EX Q]: hardware, firewall, file, format, order office supplies
[EX A]: order office supplies

[EX Q]: inferno, heat, fire, blaze, recruit
[EX A]:
recruit