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]: file, prepare, document, space, folder
[EX A]: prepare

[EX Q]: regular, general, captain, ubiquitous, popular
[EX A]: captain

[EX Q]: parrot, crane, egret, swift, excavator
[EX A]:
excavator