Question: Who was the interviewee in an interview arranged by a co-founder of the the "Sturmabteilung" for British journalist Sefton Delmer in 1931?
Sentence (from "Sefton Delmer"): During the Second World War he led a black propaganda campaign against Hitler by radio from England, so successful that he was named in the Nazis' Black Book for immediate arrest after their invasion of England.
Relevant evidence: No