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: It opens with two club-driven tracks: an interlude titled "Bridge to the Sky", and the promotional titular song. "Disco-munication" is the second interlude on the album, blending "sophisticated" electric guitars with electronic music. "Energize" is another electronic track, and is one of the only numbers on the album that include English phases ("Put your hands up together, keep your heads up forever, let me sing forever,"). The fifth track "Sparkle" was noted as a club song with an electronic arrangement, similar to the follow-up song "Rollin'". Both tracks feature autotune and vocoder pro-tools, a first for Hamasaki. The album's sixth track, "Green", shows a departure from the album's earlier electronic style; it focuses more on older traditional Japanese sound, alongside instrumentation of electric guitars and drums. The album's third interlude, "Load of the Shugyo", was described as an "atmospheric" number with heavy rock instruments in its composition. Rock music is then influenced on the following tracks "Identity"—a song that discusses about self-confidence—the single "Rule", and the tune "Love 'n' Hate", which talks about the effects of lust. The album's fourth and final interlude "Pieces of Seven" was noted for its "atmospheric" sounds of an ocean, until the second half of the track diverges into a harder rock style. "Days" is the album's first pop ballad, and is described as a love song. It closes with the ballad "Curtain Call", which features a choir and piano riffs throughout its composition.
 Link Information: traditional Japanese sound, Answer: bamboo flute
What's an instrument strongly associated with the traditional music found in the album's sixth track?

Passage: After succeeding to his family titles in 1899 he inherited further estates in 1901, including property in Marylebone, London and earned the title of 'Britain's wealthiest bachelor'. His family's wealth was initially derived from slavery and sugar estates in Jamaica, primarily Montpelier, Jamaica. He took a lease on Audley End House, Essex which had once belonged to his ancestors, in 1904 but reportedly never felt settled there. The artist Auguste Rodin created a bust of Lord Howard de Walden in 1906 which is held in the collection kept at the Rodin Museum in Philadelphia. In 1911, in preparation for his marriage, he leased Chirk Castle, Denbighshire, which became his main residence after WWI until 1946, and where he learned the Welsh language; he later served as president of the Campaign for the Protection of Rural Wales from 1931 to 1945.
 Link Information: none Answer: none
What population did Essex have the year Scott-Ellis earned the title of "Britain's wealthiest bachelor"?

Passage: Daniil Vasilievich Kazakevich (Russian: Даниил Васильевич Казакевич; 16 December 1902 – 28 November 1988) was a Belorussian Soviet Lieutenant general and Hero of the Soviet Union. Kazakevich was drafted into the Red Army in 1920 and fought in the Polish–Soviet War. In 1923 he transferred to the Soviet Border Troops. Kazakevich became an officer and by 1939 was chief of staff of a border district in the Soviet Far East. In December 1942 he became chief of staff of the Far Eastern NKVD Rifle Division, which became the 102nd Rifle Division some months later. After fighting in Operation Kutuzov, Kazakevich was given command of the 399th Rifle Division in September 1943. Kazakevich led the division through the Battle of the Dnieper, Operation Bagration and the East Prussian Offensive. He was awarded the title Hero of the Soviet Union for his leadership in the battle for the Narew bridgeheads during September 1944. Postwar, Kazakevich returned to the Border Troops and led the Moldovan and Southwestern Border Districts. After a two-year period as an advisor to the East German Border Troops, Kazakevich became chief of the Border Troops military educational institutions. He retired in 1959 and lived in Moscow, working in the Intourist Directorate.
 Link Information: The Polish–Soviet War (14 February 1919 – 18 October 1920) was fought by the Second Polish Republic, the Ukrainian People's Republic and the proto-Soviet Union Answer: 1.8

How many years did the war that Daniil Kazakevich fought in in 1920 last?