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: baby animals 
Words: cub, identity, buck, fawn, kid

SOLUTION: identity

PROBLEM: Category: animal 
Words: ant, walk, bike, fly, dangle

SOLUTION: bike

PROBLEM: Category: animal 
Words: tiger, fish, shark, whale, hunt

SOLUTION:
hunt