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]: summer, roll, plummet, fall, exercise
[EX A]: summer

[EX Q]: file, keys, document, fax, ram
[EX A]: fax

[EX Q]: ram, image, format, organize, file
[EX A]:
organize