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]: knockout, blocking, crew, tko, deck
[EX A]: crew

[EX Q]: fax, file, format, image, document
[EX A]: fax

[EX Q]: software, file, document, folder, reception
[EX A]:
reception