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: aesthetic characteristic 
Words: mild, fair, texture, even, milky
answer:
mild


question:
Category: mode of transportation 
Words: bee, swim, fly, car, walk
answer:
bee


question:
Category: computers 
Words: file, firewall, motherboard, correspondence, space
answer:

correspondence