In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.
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Question: Context: Henry's famous Walk to Canossa Link Information: The Road to Canossa, sometimes called the Walk to Canossa (/Kanossa) or Humiliation of Canossa (), refers to Holy Roman Emperor Henry IV's trek to Canossa Castle, Italy, where Pope Gregory VII was staying as the guest of Margravine Matilda of Tuscany, at the height of the investiture controversy in January 1077 Answer: 1077

Answer: What year did the Walk happen?

Question: Context: After the war ended the DGOS presented performances by European opera companies such as the Opera-Comique, Hamburg Opera and the Netherlands Opera Link Information: none Answer: none

Answer: Which European opera company presented by DGOS has been in operation for the greatest amount of years?

Question: Context: Towering in the Bielsko-Biaa city centre, the Castle is the oldest and largest construction of historical importance, erected in the old town of Bielsko. Link Information: Bielsko-Biaa (; ; ) is a city in southern Poland Answer: Poland

Answer:
In which country is the Bielsko-Biaa Museum and Castle located?