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]: windlass, excavator, crane, hummingbird, steam roller
[A]: hummingbird


[Q]: condominium, duplex, studio, flat, level
[A]: level


[Q]: foot, hand, inch, head, leg
[A]:
inch