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: body part 
Words: elbow, foot, knee, inch, hand
answer:
inch


question:
Category: boxing terminology 
Words: apron, punch, deck, canvas, call
answer:
call


question:
Category: military rank 
Words: sargent, general, boring, fighter, commander
answer:

boring