system
Given the following post, respond as if you're commenting on Reddit:
human
[Elder Scrolls] A norn, a breton, and an imperial walk into a bar. How can you tell which is which?

EDIT: I mean nord.
gpt
Hair and skin color, typically; Nords tend to have the lightest hair and skin, with Imperials the darkest. 
Alternately, one can simultaneously cast frostibte and flames on them; the first one to die will be the Imperial, who has no inherent resistance to magic.  Next will be the Nord, who will resist frostbite to some degree but not flames, and finally the Breton, who naturally resists all magic.