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: lollygag, cake, misuse, goodbye, fritter
Example Output: cake

Example Input: jog, car, bike, bats, fly
Example Output: bats

Example Input: climbing, horse, shark, fish, sea turtle
Example Output:
climbing