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: ostrich, hoist, egret, crane, parrot

SOLUTION: hoist

PROBLEM: climbing, cow, hiking, fish, wrestle

SOLUTION: cow

PROBLEM: walk, walk, fly, run, eagle

SOLUTION:
walk