instruction:
Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
question:
Category: emotional status 
Words: kind, down, sad, backward, emotionalities
answer:
backward


question:
Category: weather 
Words: brisk, unprejudiced, fair, endure, clime
answer:
unprejudiced


question:
Category: geographical property 
Words: hotel, even, horizontal, flat, valley
answer:

hotel