The BBC obituary refers to his 1970s period in Berlin. The New York Times obituary refers to it being in West Berlin. Surely the NYT approach is more accurate? That's what it was then, and being in one part of a divided city with that part itself being an enclave in a non-harmonious relationship with its hinterland was part of the edginess and surreal atmosphere that suited him. Just saying it was Berlin dilutes that, especially for the kids!