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: measurement unit 
Words: meter, inch, foot, heel, pound
answer:
heel


question:
Category: social gathering 
Words: burger, community, clan, dance hall, club
answer:

burger