TASK DEFINITION: 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.
PROBLEM: Passage: The Duchy of Prussia was a duchy in the eastern part of Prussia from 15251701. In 1525 during the Protestant Reformation, the Grand Master of the Teutonic Knights, Albert of Hohenzollern, secularized the Prussian State of the Teutonic Order, becoming Albert, Duke in Prussia. His duchy, which had its capital in Konigsberg (Kaliningrad), was established as a fief of the Crown of Poland, as had been Teutonic Prussia since the Second Peace of Thorn in October 1466. This treaty had ended the War of the Cities or Thirteen Years' War and provided for the Order's cession of its rights over the western half of its territories to the Polish crown, which became the province of Royal Prussia, while the remaining part of the Order's land became a fief of the Kingdom of Poland (13851569). In the 17th century King John II Casimir of Poland submitted Frederick William to regain Prussian suzerainty in return for supporting Poland against Sweden. On July 29, 1657, they signed the Treaty of Wehlau in Wehlau (Polish: Welawa; now Znamensk), whereby Frederick William renounced a previous Swedish-Prussian alliance and John Casimir recognised Frederick William's full sovereignty over the Duchy of Prussia. Full sovereignty was a necessary prerequisite for upgrading the Duchy to Kingdom of Prussia in 1701.
Link Information: This treaty had ended the War of the Cities or Thirteen Years' War and provided for the Order's cession of its rights over the western half of its territories to the Polish crown, which became the province of Royal Prussia Answer: Thirteen Years

SOLUTION: How long did the war that ended with the Teutonic Order conceding territorial rights to the Polish crown last?

PROBLEM: Passage: This led to his role as collaborator over many years with Michael Atiyah, initially via the part played by periodicity in K-theory. Bott made important contributions towards the index theorem, especially in formulating related fixed-point theorems, in particular the so-called 'Woods Hole fixed-point theorem', a combination of the RiemannRoch theorem and Lefschetz fixed-point theorem (it is named after Woods Hole, Massachusetts, the site of a conference at which collective discussion formulated it). The major AtiyahBott papers on what is now the AtiyahBott fixed-point theorem were written in the years up to 1968; they collaborated further in recovering in contemporary language Ivan Petrovsky on Petrovsky lacunas of hyperbolic partial differential equations, prompted by Lars Garding. In the 1980s, Atiyah and Bott investigated gauge theory, using the YangMills equations on a Riemann surface to obtain topological information about the moduli spaces of stable bundles on Riemann surfaces. In 1983 he spoke to the Canadian Mathematical Society in a talk he called "A topologist marvels at Physics".
Link Information: Sir Michael Francis Atiyah (; 22 April 1929 11 January 2019) Answer: 39

SOLUTION: How old was Michael Atiyah when he and Bott finished the Atiyah-Bott fixed-point theorem?

PROBLEM: Passage: On November 9, 1948, Flannelly was appointed Auxiliary bishop of New York and Titular Bishop of Metelis by Pope Pius XII. After receiving news of his appointment, he stated, "I am delighted, of course, that I am going to be a successor of the Apostles, and I am humbly grateful to God." He received his episcopal consecration on the following December 16 from Cardinal Francis Spellman, with Bishops Joseph Patrick Donahue and Stephen Joseph Donahue serving as co-consecrators, at St. Patrick's Cathedral. At his consecration, he wore the same vestments worn by Cardinal Spellman and Pope Pius XII at their own consecrations. He was also given the episcopal ring of Cardinal Patrick Joseph Hayes and the pectoral cross of Archbishop John Hughes. He selected as his episcopal motto: "Pro Hominibus ad Deum," which, freely translated, means, "Ordained for men in the things that appertain to God" ().
Link Information: Pope Pius XII (), born Eugenio Maria Giuseppe Giovanni Pacelli (; 2 March 18769 October 1958), was head of the Catholic Church and sovereign of the Vatican City State from 2 March 1939 to his death in 1958. Answer: 2 March 1939

SOLUTION:
When was the person who appointed Flannelly Titular Bishop of Metelis elected head of the Catholic Church?