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: luke, fair, variety, tone, well
answer:
luke


question:
Category: consumer product 
Words: joyful, program, activity, food, content
answer:
joyful


question:
Category: corporate 
Words: synergy, solid, firm, amalgamated, sustainability
answer:

solid