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.

Q: 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

A: How long did the war in which Massey joined the Canadian Army last?
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Q: Context: and Prince de Lucedio by Victor-Emmanuel II, King of Italy Link Information: King of Sardinia from 1849 until 17 March 1861 Answer: 12

A: How long was the monarch that made Philipp von Ferrary Prince de Lucedio on the throne?
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Q: Context: Al-Maqrizi was born in Fatimid Cairo Link Information: Located near the Nile Delta, modern Cairo was founded in 969AD by the Fatimid dynasty Answer: the Nile

A:
What major river runs through the city where Al-Maqrizi was born?
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