Linguistic survey !

http://mgpu.awardspace.com/gala/
Please, assess the correctness of following phrases using the scale by A.Timberlake.
Rely on your own language perception. There is no need to think much on every example. All comments are appreciated. -=Please, try to assess each sentence separately, don't figure out any patterns=-Thank you!!!

"I'd still like some proof of you being German,please write something in German. "


How would that prove that they are German?

>> "I'd still like some proof of you being German,please write something in German. "


How would that prove that they are German? <<

Jawohl, of course it proves it, dumkopf. I'm a German from Berlin! Ich bin ein Berliner!