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.
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Question: regular, general, captain, ubiquitous, popular

Answer: captain


Question: deck, caution, suits, queen, check

Answer: caution


Question: fret, emotional upsets, jack, emotional state, emotionalities

Answer:
jack