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: type of sandwich 
Words: grilled cheese, french toast, outing, burger, club

SOLUTION: outing

PROBLEM: Category: body part 
Words: heel, shin, pound, finger, foot

SOLUTION: pound

PROBLEM: Category: bird 
Words: crane, ostrich, tackle, flamingo, steam roller

SOLUTION:
steam roller