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: ok, mad, fine, bright, annoyed
Example Output: bright

Example Input: hoist, sandpiper, crane, swallow, heron
Example Output: hoist

Example Input: fudge, banned, replace, falsification, cream
Example Output:
cream