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: folder, hardware, file, firewall, support

Answer: support


Question: ubiquitous, captain, typical, general, boring

Answer: captain


Question: concrete pourer, digger, ostrich, davit, crane

Answer:
ostrich