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: animal 
Words: bird, fish, fly, drive, eagle
answer:
drive


question:
Category: food 
Words: sausage, loyalty, grub, frank, provision
answer:
loyalty


question:
Category: bird 
Words: crane, neck, swift, goose, digger
answer:

digger