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: hiking, climbing, mice, fish, row

Answer: mice


Question: Category: window material 
Words: panel, translucent fabric, spatula, metal, glass

Answer: spatula


Question: Category: location (proximity) 
Words: locked, close, beside, nearest, neighboring

Answer:
locked