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: sergeant, lieutenant, fighter, general, ordinary

SOLUTION: ordinary

PROBLEM: variety, medium, endure, size, fair

SOLUTION: endure

PROBLEM: calories, sugar, fat, bulky, heavy

SOLUTION:
bulky