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: heron, davit, egret, derrick, crane
Example Output: davit

Example Input: blackjack, gin, poker, wine, slapjack
Example Output: wine

Example Input: bowl, lead, vinyl, glass, plastic
Example Output:
bowl