In this task, you're given a passage, 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 passage 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 passage or linked information.

Passage: German Namibians () are a community of people descended from ethnic German colonists who settled in present-day Namibia. In 1883, the German trader Adolf Lüderitz bought what would become the southern coast of Namibia from Josef Frederiks II, a chief of the local Oorlam people, and founded the city of Lüderitz. The German government, eager to gain overseas possessions, annexed the territory soon after, proclaiming it German South West Africa (). Small numbers of Germans subsequently immigrated there, many coming as soldiers (), traders, diamond miners, or colonial officials. In 1915, during the course of World War I, Germany lost its colonial possessions, including South West Africa (see History of Namibia); after the war, the former German colony was administered as a South African mandate. The German settlers were allowed to remain and, until independence in 1990, German remained an official language of the territory alongside Afrikaans and English.
 Link Information: none Answer: none
Which person involved in the sale of the southern coast of Namibia is the oldest?

Passage: Born in 1941, Belanger attended public schools in Bristol, Connecticut. He has degrees from Haverford College (A.B., 1963) and from Columbia University (M.A., 1964; Ph.D., 1970), where he studied under James L. Clifford, Allen T. Hazen, and John H. Middendorf. Between 1966 and 1971, while working on his dissertation on aspects of the 18th-century London book trade, he taught advanced prose composition courses at the Columbia University School of General Studies, an activity leading to the 1972 publication of The Art of Persuasion, a writing manual co-authored with J. Steward LaCasce. While in England on a Columbia traveling fellowship in 1968–69, he revised the book production sections of the 18th-century volume of the New Cambridge Bibliography of English Literature (NCBEL), working with Graham Pollard, who had compiled the original sections for the first edition of CBEL, published in 1940. With Jane Marla Robbins, he co-authored and co-directed a one-character play starring Robbins called Dear Nobody, based on the life of the 18th-century diarist and novelist, Fanny Burney. The play ran Off-Off-Broadway in 1968; it later had a five-months' Off-Broadway run at the Cherry Lane Theatre in 1974.
 Link Information: 

The School of General Studies, Columbia University (GS) is a liberal arts college and one of the undergraduate colleges of Columbia University, situated on the university's main campus in Morningside Heights, New York City. Answer: New York
In what state did Belanger teach composition courses before he published The Art of Persuasion?

Passage: The history of Lubartów begins on May 29, 1543, when King Sigismund the Old allowed local nobleman Piotr Firlej to found a town called Lewartów (the original name comes from Lewart, the coat of arms of the Firlej family). The town became famous when it belonged to Mikołaj Firlej, the son of Piotr Firlej. In the late 16th century, it was one of centers of Calvinism in Lesser Poland, and Mikołaj Firlej invited here a number of skilled artisans from France, Germany and Holland, as well as cattle breeders. Lewartów frequently changed owners. In the early 18th century it belonged to the Sanguszko family, who rebuilt the palace, built two Baroque churches and tenement houses. Upon request of Paweł Karol Sanguszko, on November 22, 1744, King Augustus III of Poland changed the name of the town to Lubartów (in honor of Lubart - Liubartas, the son of Lithuanian Prince Gediminas; Sanguszko believed that Liubartas was the founder of his family). King Augustus granted a new coat of arms to the town. The 19th century was not lucky for Lubartów, as the town, which from 1815 to 1915 belonged to Russian-controlled Congress Poland, burned several times (1831, 1838, 1846). In 1866 it became the seat of a county, and slowly began modernization. By 1912 it had seven manufacturing enterprises, including mills and a brewery, in 1922, glassworks were opened.
 Link Information: Congress Poland or Russian Poland, formally known as the Kingdom of Poland, was a polity created in 1815 by the Congress of Vienna as a sovereign Polish state Answer: 1815

In what year was the Russian-controlled Congress Poland established?