instruction:
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: employment activity 
Words: fire, hire, ground, pay, retire
answer:
ground


question:
Category: aesthetic characteristic 
Words: hot, there, detailed, fine, probation
answer:
probation


question:
Category: widespread 
Words: commander, universal, regular, common, general
answer:

commander