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: annoyed, fine, exquisite, alert, ok
Example Output: exquisite

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

Example Input: fly, swim, waggle, soar, wave
Example Output:
waggle