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: crane, sandpiper, hoist, windlass, goose
answer:
windlass


question:
Category: emotional status 
Words: ecstatic, excited, content, activity, angry
answer:
activity


question:
Category: animal 
Words: grasshopper, fly, walk, bus, eagle
answer:

bus