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: melancholy, descending, emotionalities, emotional, down

SOLUTION: descending

PROBLEM: concerned, strap lock, anxious, bored, fret

SOLUTION: strap lock

PROBLEM: fat, vitamin c, area, brittleness, absorption

SOLUTION:
vitamin c