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: poker 
Words: punch, pack, deck, check, fold

SOLUTION: punch

PROBLEM: Category: consumer product 
Words: jealous, content, merchandise, jewelry, shop

SOLUTION: jealous

PROBLEM: Category: guitar part 
Words: fret, worried, chord, amp, jack

SOLUTION:
worried