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.

Category: aesthetic characteristic 
Words: ticket, fine, bright, detailed, exquisite
ticket

Category: aesthetic characteristic 
Words: fair, medium, size, light, loyal
loyal

Category: computers 
Words: format, space, image, file, answer

answer