Problem: "Who wrote most of the operetta, ""The Tales of Hoffman"", which although unfinished at his death, was completed by Ernest Guiraud?"
Answer: jacques offenbach

Problem: The plant kniphofia is more commonly known by what name?
Answer: red hot poker

Problem: Which 400-year-old German dynasty from Essen is known for the industrial production of steel and armaments and has been known as the 'Arsenal of the Reich'?
Answer: krupp family

Problem: Graz is the second-largest city in which country?
Answer:
austria