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: employment activity 
Words: pay, instruct, heat, fire, scold

Answer: heat


Question: Category: type of sandwich 
Words: dagwood, club, doorstep, hamburger, community

Answer: community


Question: Category: emotional status 
Words: mad, content, relaxed, fine, ticket

Answer:
ticket