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: type of sandwich 
Words: french toast, community, club, burger, dagwood

SOLUTION: community

PROBLEM: Category: poker 
Words: blind, chips, queen, gunwale, deck

SOLUTION: gunwale

PROBLEM: Category: chocolate food 
Words: invent, fudge, rich, cookies, truffles

SOLUTION:
invent