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: mode of transportation 
Words: bus, fly, jog, beetle, drive

Answer: beetle


Question: Category: activity 
Words: blow, waste away, sweet roll, whittle, fritter

Answer: sweet roll


Question: Category: aesthetic characteristic 
Words: fine, ticket, dull, neat, detailed

Answer:
ticket