I'm trying to surf the net but I really can't find a reliable source about this. This is the first time I've heard of it. Our teacher hasn't explained it yet.
So, I'm begging for help. I need at least one example of compound proper nun and I'll take care of the rest.
Chicago-style pizza -- I wonder if this counts.
or things like Real Madrid?
or maybe Petronas Twin Towers?
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.