Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
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Question: Category: secretary duty 
Words: organize, sort mail, fax, file, text

Answer: text


Question: Category: bird 
Words: dump truck, pelican, goose, crane, derrick

Answer: dump truck


Question: Category: chocolate food 
Words: fudge, chocolate cake, pudding, unwarranted, heavy

Answer:
unwarranted