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: poker 
Words: blind, chips, queen, gunwale, deck

Answer: gunwale


Question: Category: bird 
Words: ostrich, digger, sandpiper, crane, goose

Answer: digger


Question: Category: outdoor sport activity 
Words: hiking, wrestle, fish, swim, sea turtle

Answer:
sea turtle