instruction:
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.
question:
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
answer:
How long did the war in which Massey joined the Canadian Army last?


question:
Context: Taube was born in New York City Link Information: with an estimated 19,979,477 people in its 2018 Metropolitan Statistical Area and 22,679,948 residents in its Combined Statistical Area Answer: 19,979,477
answer:
How many people live in the city that Taube was born?


question:
Context: The video begins with an introduction of Dr. Dre's music career, such as when he and fellow N.W.A member DJ Yella were in the 1980s funk group World Class Wreckin' Cru. Link Information: Active from 1987 to 1991 Answer: World Class Wreckin' Cru
answer:

Which of the groups that Dr. Dre was a member of was started earlier?