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: swallow, heron, crane, flamingo, tackle
Example Output: tackle

Example Input: misuse, danish, fritter, dally, whittle
Example Output: danish

Example Input: loosen, fudge, cake, unwarranted, unlicensed
Example Output:
cake