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: crane, davit, swift, upraise, hoist

A: swift
****
Q: cake, fudge, rich, invent, cream

A: invent
****
Q: fire, air, ice, flame, recruit

A:
recruit
****