context: Ernst Julius Röhm (November 28, 1887 Munich - July 1, 1934) was a distinguished German officer in the First World War, who is commemorated as the leader of the National Socialist Party's Sturmabteilung (SA). Rohm was killed in a so-called night knife massacre of long knives, because he was staged to design a coup against Adolf Hitler.
question: Why was Ernst Röhm killed?
answers.text: because he was staged to design a coup against Adolf Hitler