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: jog, fly, swim, run, drive

Answer: run


Question: luke, make the grade, fair, milky, deal

Answer: milky


Question: discothek, club, group, picnic, hamburger

Answer:
hamburger