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

[EX Q]: unwarranted, fudge, pudding, lie, unlicensed
[EX A]: pudding

[EX Q]: clan, club, convention, doorstep, cinema
[EX A]:
doorstep