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: widespread 
Words: average, typical, common, general, admiral

SOLUTION: admiral

PROBLEM: Category: kitchenware 
Words: metal, glass, knifer, dish, cup

SOLUTION: metal

PROBLEM: Category: elements 
Words: let go, air, combustion, fire, earth

SOLUTION:
let go