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: personal characteristic 
Words: cold, positive, calm, assured, cool

SOLUTION: cold

PROBLEM: Category: poker 
Words: level, blind, pack, draw, deck

SOLUTION: level

PROBLEM: Category: animal 
Words: wrestle, fish, dolphin, iguana, goat

SOLUTION:
wrestle