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: concerned, strap lock, anxious, bored, fret
Example Output: strap lock

Example Input: data sets, sea, prompt, timely, current
Example Output: sea

Example Input: mild, cold, luke, fair, texture
Example Output:
texture