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: fire, instruct, inferno, retire, scold
Example Output: inferno

Example Input: early, water, delayed, history, current
Example Output: water

Example Input: fair, texture, light, flaxen, tangle
Example Output:
tangle