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: military rank 
Words: regular, major, general, soldier, cadet
answer:
regular


question:
Category: police punishment 
Words: hearing, firstrate, alert, custody, fine
answer:
alert


question:
Category: physical activity 
Words: bend, stoop, crouch, cat, duck
answer:

cat