instruction:
In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
question:
Passage: A native of the Ukrainian port city of Odessa (a part of the Soviet Union until 1991), Izold Pustolnik graduated cum laude from Odessa University in 1960 and received his Ph.D. from the University of Tartu in 1969 and his D.Sc. from Saint Petersburg State University in 1994. From the age of 27 in 1965 until his death forty-three years later, he was on the staff of Tartu Observatory where, as a research associate (promoted to senior research associate in 2000), he worked on the physics of close binary systems, theory of stellar atmospheres, interstellar medium, archaeoastronomy and history of astronomy. He was also a member of the International Astronomical Union, European Astronomical Society, Euroscience, Society for European Astronomy in Culture (SEAC) and served on the Board of Euro-Asian Astronomical Society and the Advisory Board of Astronomical and Astrophysical Transactions.
Link Information: none Question: How many citizens lived in Odessa the year it ceased to be part of the Soviet Union?
answer:
Answer: none

question:
Passage: Promoted lieutenant-colonel in 1852, and colonel (and commanding officer of the 5th Uhlans) in 1853, Manteuffel was sent on important diplomatic missions to Vienna and St Petersburg. In 1857 he was promoted to major-general and chief of the Prussian Military Cabinet (the King's military advisers). He gave strong support to the Prince Regent's plans for the reorganization of the army. In 1861 he was violently attacked in a pamphlet by Karl Twesten (18201870), a Liberal leader, whom he had wounded in a duel, for which Manteuffel insisted on being briefly imprisoned. He was promoted to lieutenant-general for the coronation of William I on 18 October 1861 and saw active service in that rank in the Danish War of 1864, then at its conclusion was appointed civil and military governor of Schleswig. In the Austrian War of 1866 he first occupied Holstein and afterwards commanded a division under Vogel von Falkenstein in the Hanoverian campaign, then in July succeeded Vogel in command of the Army of the Main.
Link Information: none Question: How many months long was the Danish War of 1864?
answer:
Answer: none

question:
Passage: Spade was born into a fisherman's family in Ventspils, then part of the Russian Empire, in 1891. He was trained as a mechanical engineer at the Riga Polytechnic Institute, which he graduated in 1914. He was drafted in the Imperial Russian Baltic Fleet at the outset of World War I. He advanced from a position of michman to that of a torpedo boat commander and ended up as a commanding officer at the Black Sea Navy Brigade Headquarters in Batumi, where he married a Georgian woman in 1917. After the fall of the Russian Empire, he joined the navy of the People's Republic of Ukraine in early 1918 and, following a peace treaty between Ukraine and the Central Powers, pledged his loyalty to the Democratic Republic of Georgia. In Georgian service Spade commanded a detachment of cutters in Batumi. In June 1918, the Ottoman troops took control of Batumi and made the town's garrison, including Spade, captive. Released in October 1918, Spade joined the ranks of the Armed Forces of South Russia, a White party to the Russian Civil War. He was promoted to Senior Lieutenant and put in charge of the Sevastopol port. In March 1920, Spade, together with the defeated White forces, was evacuated to Constantinople, where he accepted Latvian citizenship and returned to Latvia with his wife.
Link Information: none Question: When did Ventspils stop being a part of the Russian Empire?
answer:
Answer: none