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.

Ex Input:
Context: With his then-wife Barbara Kesel, he co-wrote a Hawk and Dove miniseries in 1988 which was drawn by Rob Liefeld. Link Information: His first published story, was a DC Comics Bonus Book insert in Warlord #131 (September 1988) Answer: 1988

Ex Output:
When did Liefeld start producing comics?

Ex Input:
Context: He was the son of Henry Andrade Harben and the grandson of Sir Henry Harben Link Information: Henry Andrade Harben FSA (12 August 1849 - 18 August 1910) Answer: 26

Ex Output:
What is the age difference between Harben's father and grandfather?

Ex Input:
Context: This treaty had ended the War of the Cities or Thirteen Years' War and provided for the Order's cession of its rights over the western half of its territories to the Polish crown Link Information: This treaty had ended the War of the Cities or Thirteen Years' War and provided for the Order's cession of its rights over the western half of its territories to the Polish crown, which became the province of Royal Prussia Answer: Thirteen Years

Ex Output:
How long did the war that ended with the Teutonic Order conceding territorial rights to the Polish crown last?