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'.

Passage: For the rest of her long career, Ancona served in a variety of roles, both in the main fleet and in Italy's colonial empire. After the end of the war, the government lost confidence in the fleet and drastically reduced the naval budget. The cuts were so severe that the fleet had great difficulty in mobilizing its ironclad squadron to attack the port of Civitavecchia in September 1870, as part of the wars of Italian unification. Instead, the ships were laid up and the sailors conscripted to man them were sent home. Some time after 1866, the ship was rebuilt as a central battery ship, with most of her guns located in a central, armored casemate. Two other guns were placed in the bow as chase guns, with a third mounted as a stern chaser. At around 1871, her armament was also revised, to two guns in the bow and eight 8 in guns, four on each broadside and the last in the stern. Later, her armament was changed again, to eight guns, six guns, four quick firing (QF) guns, and two Hotchkiss revolver cannons. Ancona was stricken from the naval register in 1903 and then broken up for scrap.
 Link Information: 1867 Garibaldi made a second attempt to capture Rome, but the papal army, strengthened with a new French auxiliary force, defeated his poorly armed volunteers at Mentana. Subsequently, a French garrison remained in Civitavecchia until August 1870,  Question: How long did the war where Ancona attacked the port of Civitavecchia last?
Answer: 3

Passage: In 1975 his orchestral Fourth Sonata (written 1974–75) won the Scottish National Orchestra's Ian Whyte Award. Subsequent orchestral works include the widely performed Night Music (1976), Sonata No. 5: Landscape (1977–81), and a First Cello Concerto, commissioned by the BBC for the 1984 Proms: these last two have been recorded by Unicorn-Kanchana. In 1989 Cortège was given its first performance by the Orchestra of the Royal Opera House under Bernard Haitink, and Quatrain by the London Symphony Orchestra and Michael Tilson Thomas. This was the first of a series of LSO commissions, followed by Machines and Dreams for their 1991 Childhood Festival, Memorial in 1993 with Mstislav Rostropovich as conductor, and a Second Cello Concerto for Rostropovich in 1996. In 1990 he made a setting of three comic poems by Wendy Cope, Strugnell's Haiku. Matthews was Associate Composer with the LSO from 1992 until 1999. The orchestral version of Hidden Variables was a joint commission for the LSO and the New World Symphony Orchestra, who gave the American première in Miami under Michael Tilson Thomas in 1992; in the same year the Cleveland Orchestra gave the American première of Machines and Dreams. Collins Classics released a CD of Matthews' LSO commissions in 1996 to celebrate his 50th birthday.
 Link Information: The London Symphony Orchestra (LSO), founded in 1904, Question: How long had the London Symphony Orchestra been playing for the year Matthews won the Ian Whyte Award?
Answer: 71

Passage: The 19th annual Arab League summit reaffirmed the Arab Peace Initiative first adopted in 2002 (also known as the Beirut Declaration). Arab leaders at the summit urged Israel to accept this initiative. Saudi Foreign Minister Prince Saud al-Faisal said that the plan would have a strong chance of winning international support and of reviving Israeli–Arab peace talks if adopted unanimously by all Arab leaders. The plan, moreover, set up a mechanism to promote the peace plan that would pave the way for Arab countries with no ties to Israel, including Saudi Arabia, to open channels of communications with the Jewish state—a longtime goal for various presidential administrations in the United States. The peace initiative, as Middle Eastern scholars explain, was considered a "great leap from historical resolutions of 1964 and 1967, which had vowed to destroy Israel." Under the plan, Arab nations would recognize Israel if Israel withdrew from land it occupied in the 1967 Arab-Israeli war. Moreover, the plan allows for the creation of a Palestinian state—with its capital in East Jerusalem—and the return of Palestinian refugees based on United Nations General Assembly Resolution 194. The final draft of the plan, moreover, avoided mentioning the phrase "right of return", which has been a point of contention in all previous peace talks; instead it called for a "just solution to the Palestinian refugee problem."
 Link Information: Under the plan, Arab nations would recognize Israel if Israel withdrew from land it occupied in the 1967 Arab-Israeli war.  Question: How long did the Arab-Israeli War last?

Answer: 6