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: military rank 
Words: sargent, ordinary, captain, colonel, general

SOLUTION: ordinary

PROBLEM: Category: activity 
Words: fritter, sweet roll, whittle, seperate, divide

SOLUTION: sweet roll

PROBLEM: Category: chocolate food 
Words: cupcake, fudge, tart, smear, cream

SOLUTION:
smear