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: fiber, big boned, protein, carbs, fat

Answer: big boned


Question: pick, fret, string, fingerpick, sad

Answer: sad


Question: empower, fire, remove, air, pay

Answer:
air