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.

Input: Consider Input: cool, fair, light, fine, level

Output: fine


Input: Consider Input: fire, hire, heat, inferno, earth

Output: hire


Input: Consider Input: order office supplies, sort mail, file, program, type


Output: program