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: outdoor sport activity 
Words: kayak, raft, fish, canyoning, dolphin

Answer: dolphin


Question: Category: secretary duty 
Words: file, software, schedule, support, order office supplies

Answer: software


Question: Category: police punishment 
Words: firstrate, suspension, probation, there, fine

Answer:
there