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: cute, lust, bambi, swoon, fawn
Example Output: bambi

Example Input: fat, sugar, ugly, chunky, angular momentum
Example Output: sugar

Example Input: unyielding, solid, inflexible, firm, amalgamated
Example Output:
amalgamated