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.

Example Input: answer, answer calls, space, file, schedule
Example Output: space

Example Input: glass, wood, coating, knifer, woodwork
Example Output: knifer

Example Input: lie, chocolate, smuggled, fudge, banned
Example Output:
chocolate