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: guitar part 
Words: inlays, concerned, string, notes, fret
answer:
concerned


question:
Category: secretary duty 
Words: file, errands, type, folder, order office supplies
answer:
folder


question:
Category: physical property 
Words: chunky, vitamin c, thin, absorption, fat
answer:

vitamin c