Question: David Edgar wrote a play based on a book by Gitta Sereny, who was a biographer with what nationality?
Sentence (from "Albert Speer (play)"): Albert Speer was a 2000 play by the British playwright David Edgar on the life of the Nazi-era architect Albert Speer, based on the book "Albert Speer: His Battle with Truth" by Gitta Sereny.
Relevant evidence: Yes