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: fudge, molasses, cream, tart, banned
Example Output: banned

Example Input: cool, relaxed, mild, unflappalbe, assured
Example Output: mild

Example Input: sandpiper, derrick, tackle, crane, excavator
Example Output:
sandpiper