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: deck, punch, blocking, suits, canvas
Example Output: suits

Example Input: vitamin c, salt, fat, big, absorption
Example Output: absorption

Example Input: inflexible, concerted, leverage, common, firm
Example Output:
inflexible