TASK DEFINITION: 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.
PROBLEM: Category: aesthetic characteristic 
Words: hot, there, detailed, fine, probation

SOLUTION: probation

PROBLEM: Category: measurement unit 
Words: ounce, ear, inch, foot, milimeter

SOLUTION: ear

PROBLEM: Category: employment activity 
Words: replace, water, fire, empower, retire

SOLUTION:
water