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: motherboard, schedule appointments, schedule, file, type
Example Output: motherboard

Example Input: parrot, goose, crane, swallow, excavator
Example Output: excavator

Example Input: remorseful, emotional supports, loveful, down, below
Example Output:
below