Ask HN: Examples of 451 error pages in the wild?

I'm looking at the implementation of a 451 error page ("Unavailable For Legal Reasons") ahead of the GDPR directive coming into law in the EU. I'm looking for current examples of effective pages so as to better inform visitors. Short of real-world examples, mocks or other documented approaches would be welcome. For background: https://en.wikipedia.org/wiki/HTTP_451 https://gdpr-info.eu/