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: physical activity 
Words: trip, jump, fall, equinox, exercise
answer:
equinox


question:
Category: computers 
Words: hardware, sort mail, download, program, file
answer:
sort mail


question:
Category: moral characteristic 
Words: blunt, harsh, courage, frank, bun
answer:

bun