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: bird 
Words: ostrich, digger, sandpiper, crane, goose
answer:
digger


question:
Category: moral characteristic 
Words: concise, brash, integrity, cheese, frank
answer:
cheese


question:
Category: emotional status 
Words: strap lock, fret, worried, emotional state, sad
answer:

strap lock