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.
--------
Question: upraise, crane, excavator, digger, hoist

Answer: hoist


Question: blue, wave, current, timely, drink

Answer: timely


Question: emotional supports, melancholy, ground, down, kind

Answer:
ground