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: fawn, love, calf, flatter, identity
Example Output: calf

Example Input: crying, concerned, pick, emotionalities, fret
Example Output: pick

Example Input: ant, flutter, wave, jog, fly
Example Output:
ant