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: level, smooth, flat, lined, elevation
Example Output: level

Example Input: falsification, banned, mangle, chocolate cake, fudge
Example Output: chocolate cake

Example Input: order office supplies, file, text, sort mail, schedule
Example Output:
text