TASK DEFINITION: Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
PROBLEM: hardware, firewall, file, format, order office supplies

SOLUTION: order office supplies

PROBLEM: mallet, goose, geese, hike, duck

SOLUTION: hike

PROBLEM: goose, egret, flamingo, crane, tackle

SOLUTION:
tackle