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: animals 
Words: duck, jog, cat, pig, mallet

Answer: jog


Question: Category: fried food 
Words: croquet, dumpling, fritter, spend, patty

Answer: spend


Question: Category: military rank 
Words: boring, general, admiral, fighter, major

Answer:
boring