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


question:
Category: police punishment 
Words: suspension, arrest, classy, custody, fine
answer:
classy


question:
Category: physical activity 
Words: leaves, fall, exercise, roll, trip
answer:

leaves