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: boxing terminology 
Words: deck, ring, head, knockout, glove
answer:
head


question:
Category: direction 
Words: down, opposite of up, sliding, forward, emotional state
answer:
emotional state


question:
Category: guitar part 
Words: worried, chord, fingerpick, fret, jack
answer:

worried