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: drink, detestings, whirlpool, main, current

Answer: detestings


Question: heron, davit, egret, derrick, crane

Answer: davit


Question: convention, discothek, bar, lettuce, club

Answer:
lettuce