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.

Q: cold, deal, make the grade, unprejudiced, fair

A: unprejudiced
****
Q: kind, down, sad, backward, emotionalities

A: backward
****
Q: plunge, roll, fall, lift, spring

A:
spring
****