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.

Input: Consider Input: blue, wave, current, timely, drink

Output: timely


Input: Consider Input: blue, current, drink, water, prompt

Output: prompt


Input: Consider Input: inflexible, concerted, leverage, common, firm


Output: inflexible