system
A chat on subreddit /r/NoStupidQuestions
human
If you want to test if someone is faking being Canadian, ask them to name a few of our provinces. 
A Canadian can answer that, those from the States, not so much.
gpt
It helps a lot that there's so few. Even if I was American there's no way I could name a good portion of 50+ states, but I can rattle off 10 provinces 3 territories ezpz.