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.

Ex Input:
current, dastards, prompt, course, timely

Ex Output:
course


Ex Input:
motherboard, folder, hardware, file, schedule appointments

Ex Output:
schedule appointments


Ex Input:
ashamed, down, loveful, forward, emotionalities

Ex Output:

forward