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: ashamed, down, emotional upsets, disgusted, ground
answer:
ground


question:
Category: animal 
Words: train, fly, jump, leap, grasshopper
answer:
train


question:
Category: type of sandwich 
Words: lettuce, french toast, roll, bar, club
answer:

bar