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: descending, disgusted, emotionalities, emotional supports, down

Answer: descending


Question: fearful, content, substance, program, thing

Answer: fearful


Question: flamingo, tackle, ostrich, crane, davit

Answer:
tackle