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.

[Q]: folder, hardware, file, firewall, support
[A]: support


[Q]: geese, crouch, duck, elephant, mallet
[A]: crouch


[Q]: admiral, general, cadet, sergeant, ordinary
[A]:
ordinary