TASK DEFINITION: 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.
PROBLEM: Context: The land that eventually became Wisconsin was transferred from British to American control with the 1783 signing of the Treaty of Paris. Link Information: The land that eventually became Wisconsin was transferred from British to American control with the 1783 signing of the Treaty of Paris. Answer: Great Britain

SOLUTION: What countries were involved in the treaty that saw the land that became Wisconsin transferred to American control in 1783?

PROBLEM: Context: such as the Swiss band Hellhammer (later to become Celtic Frost) Link Information:  Formed in 1981 as Hellhammer, the band became Celtic Frost in 1984 Answer: 1984

SOLUTION: In what year did Hellhammer become Celtic Frost?

PROBLEM: Context: The Ibicaba has also served as a military headquarters during the War of the Triple Alliance, receiving the Emperor Dom Pedro II, the princess Isabel and the count Gaston of Eu. Link Information: Dom Pedro II (English: Peter II; 2 December 1825 – 5 December 1891) Answer: Dom Pedro II

SOLUTION:
Which person that the Ibicaba recieved when it was a military headquarters was oldest?