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: moral characteristic 
Words: unprejudiced, warm, fair, ok, balanced
answer:
warm


question:
Category: secretary duty 
Words: answer calls, file, correspondence, document, fax
answer:
document


question:
Category: physical property 
Words: skinny, pasty, chunky, iron, fat
answer:

iron