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.

[Q]: Passage: The government of the Electorate of Hesse (Kurhessen) had begun building the Frankfurt–Bebra railway from Bebra in North Hesse to Fulda, Hanau and Frankfurt before its annexation by Prussia after the Austro-Prussian War of 1866. The project was completed by the Prussian state railways on 15 December 1868. Until the opening of the line south of the Main, trains from Bebra to Frankfurt had to use the North Main line and the Frankfurt City Link Line. On 15 November 1873 the new line south of the Main between Hanau and Frankfurt via Sachsenhausen and Offenbach was opened, including South Station (opened as Bebraer Bahnhof, "Bebra line" station) and Offenbach Hauptbahnhof. The South Main line is still the most important rail link connecting Frankfurt with Leipzig, Berlin and Hamburg.
 Link Information: The Austro-Prussian War or Seven Weeks' War Answer: 2
[A]: How many months did the war that preceded the building of the Frankfurt-Bebra railway last?


[Q]: Passage: Ellis was signed by the Leafs and played junior hockey with the Toronto Marlboros of the Ontario Hockey Association from 1961–1964. He played on the team that won the Memorial Cup in 1964. Ellis became a full-time Leaf in 1964–65 and played 11 seasons to 1974–75, winning the Stanley Cup in 1967. He was also a member of Team Canada at the 1972 Summit Series. Ellis retired at age 30 during training camp in 1975, coming off the most productive season of his career with 61 points. He said he no longer had the desire to play and denied that his decision had anything to do with being passed over as team captain in favour of Darryl Sittler a month earlier. In 1977, Ellis came out of retirement to play for Canada at the world hockey championships and then decided to resume his NHL career with the Leafs in 1977–78.
 Link Information: none Answer: none
[A]: Who won the Memorial Cup in 1963 before Ron Ellis won it?


[Q]: Passage: The Russian Soviet Republic was proclaimed on 7 November 1917 (October Revolution) as a sovereign state and the world's first constitutionally socialist state with the ideology of Communism. The first Constitution was adopted in 1918. In 1922, the Russian SFSR signed the Treaty on the Creation of the USSR officially setting up of the Union of Soviet Socialist Republics. The 1977 Soviet Constitution stated that "[a] Union Republic is a sovereign [...] state that has united [...] in the Union" and "each Union Republic shall retain the right freely to secede from the USSR". On 12 June 1990, the Congress of People's Deputies adopted the Declaration of State Sovereignty, established separation of powers (instead of Soviet form of government), established citizenship of Russia and stated that the RSFSR shall retain the right of free secession from the USSR. On 12 June 1991, Boris Yeltsin (1931–2007), supported by the Democratic Russia pro-reform movement, was elected the first and only President of the RSFSR, a post that would later become the presidency of the Russian Federation.
 Link Information: On November 7, 1917, a coup d'état went down in history as the October Revolution. The interim government was toppled, the Soviets seized power Answer: the Soviets
[A]:
Who declared the Soviet Republic a socialist state during the October Revolution?