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]: dock, canvas, deck, blocking, caution
[EX A]: dock

[EX Q]: cake, fudge, rich, invent, cream
[EX A]: invent

[EX Q]: unbending, rigged, tough, firm, private
[EX A]:
private