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: stoop, crouch, bow, duck, dog
answer:
dog


question:
Category: boats 
Words: bridge, deck, stern, dock, suits
answer:
suits


question:
Category: police punishment 
Words: fine, jail, jail time, wispy, pretty
answer:

pretty