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: pack, suits, draw, deck, corner
Example Output: corner

Example Input: space, file, answer calls, fax, support
Example Output: space

Example Input: brittleness, area, protein, fat, capacitance
Example Output:
protein