Question: Name the German state whose capital is known for a bombing raid during the second world war where 3,900 tons of high-explosive bombs and incendiary devices were dropped with the help of Sir Arthur Harris Air Officer Commanding-in-Chief?
Sentence (from "Sir Arthur Harris, 1st Baronet"): Harris was tasked with implementing Churchill's policy and supported the development of tactics and technology to perform the task more effectively.
Relevant evidence: No