Mr. Wiesenthal tracked down Karl Silberbauer , at the time a Vienna policeman , who had been the Gestapo aide responsible for arresting Anne Frank and her family in their secret annex in Amsterdam , a feat of sleuthing that buttressed the credibility of Anne 's diary in the face of neo-Nazi claims that it was fabricated .
Karl Silberbauer /people/person/place_lived Vienna
Karl Silberbauer /people/person/place_of_birth Vienna
Anne Frank /people/person/place_lived Amsterdam
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