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: animal 
Words: stingray, horse, iguana, wrestle, fish

SOLUTION: wrestle

PROBLEM: Category: type of sandwich 
Words: french toast, community, club, burger, dagwood

SOLUTION: community

PROBLEM: Category: emotional status 
Words: string, frustrated, sad, fret, emotional

SOLUTION:
string