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: 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

SOLUTION: How long did the war in which Massey joined the Canadian Army last?

PROBLEM: Context: ceremonies include the Ndut (rite of passage) Link Information: There are two main types of Ndut initiation rites. The first concerns the circumcision for Serer boys whilst the second concerns the initiation of Serer girls. Serer religion and culture forbids the circumcision of Serer girls (female genital mutilation). Only Serer boys are circumcised. Serer girls receive their initiation through njam or ndom (the tattooing of the gums). Preparation for the initiation starts early in childhood. In many cases, boys are circumcised when they reach 13 years old. However it is not uncommon for some to be circumcised when they are 19 to 26 years old. Likewise, Serer girls receive their initiation when they are 11 to 18 years. Answer: the circumcision for Serer boys

SOLUTION: What is performed during the rite of passage?

PROBLEM: Context: Sir John Spicer was appointed to the first Royal Commission into the collision between HMAS Melbourne and HMAS Voyager, and inquiries into the aviation crashes of TAA Flight 538 (1960), Ansett-ANA Flight 325 (1961) and Ansett-ANA Flight 149 (1966). Link Information: All 29 people on board Trans Australia Airlines Flight 538 were killed. Answer: 68

SOLUTION:
How many people were killed in the crashes of the TAA Flight 538 , Ansett-ANA Flight 325 and Ansett-ANA Flight 149?