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: type of sandwich 
Words: roll, hoagie, bacon, club, community
answer:
community


question:
Category: elements 
Words: fire, retire, ice, air, earth
answer:
retire


question:
Category: mode of transportation 
Words: fly, flutter, bus, drive, fish
answer:

fish