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.

Example Input: Context: Massey joined the Canadian Army at the outbreak of World War I, Link Information: First World War, the Great War, the Seminal Catastrophe, and initially in North America as the European War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Answer: 4
Example Output: How long did the war in which Massey joined the Canadian Army last?

Example Input: Context: In 1986, Mehboob met music composer Ismail Darbar Link Information: Ismail Darbar (born 1 June 1964) Answer: 22
Example Output: How old was Ismail Darbar when Mehboob met him?

Example Input: Context: Still wines from the Champagne region were known before medieval times. Link Information: In the history of Europe, the Middle Ages (or medieval period) lasted from the 5th to the 15th century Answer: 10
Example Output:
How many centuries did the time period last where still wines from the Champagne region were known even before then?