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.
--------
Question: Category: outdoor sport activity 
Words: fish, hike, hunting, row, dog

Answer: dog


Question: Category: activity 
Words: dally, seperate, fritter, waste, fried

Answer: fried


Question: Category: employment activity 
Words: let go, pay, ground, sack, fire

Answer:
ground