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: ounce, foot, kilometer, milimeter, heel

SOLUTION: heel

PROBLEM: fire, hire, heat, inferno, earth

SOLUTION: hire

PROBLEM: sunny, fair, warm, unprejudiced, windy

SOLUTION:
unprejudiced