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'.

Ex Input:
Passage: Slavic tribes settled in the Balkan region including North Macedonia by the late 6th century AD. During the 580s, Byzantine literature attests to the Slavs raiding Byzantine territories in the region of Macedonia, later aided by Bulgars. Historical records document that in c. 680 a group of Bulgars, Slavs and Byzantines led by a Bulgar called Kuber settled in the region of the Keramisian plain, centred on the city of Bitola, forming a second route for the Bulgar definitive settlement on the Balkan Peninsula at the end of the 7th century. Presian's reign apparently coincides with the extension of Bulgarian control over the Slavic tribes in and around Macedonia. The Slavic tribes that settled in the region of Macedonia converted to Christianity around the 9th century during the reign of Tsar Boris I of Bulgaria. The Ohrid Literary School became one of the two major cultural centres of the First Bulgarian Empire, along with the Preslav Literary School. Established in Ohrid in 886 by Saint Clement of Ohrid on the order of Boris I, the Ohrid Literary School was involved in the spreading of the Cyrillic.
 Link Information: The 6th century Byzantine historian Jordanes, wrote in his 551 AD work Getica: "although they derive from one nation, now they are known under three names, the Veneti, Antes and Sclaveni" Question: How many different slavic tribes were there in the 6th century?

Ex Output:
Answer: 3


Ex Input:
Passage: James Graham (January 7, 1793 – September 25, 1851) a Congressional Representative from North Carolina; born in Lincoln County, North Carolina, January 7, 1793; brother of William Alexander Graham; pursued classical studies and graduated from the University of North Carolina at Chapel Hill in 1814; studied law; was admitted to the bar in 1818 and commenced practice in Rutherford County, North Carolina; member of the State house of representatives in 1822, 1823, 1824, 1828, and 1829; elected as a National Republican to the Twenty-third Congress (March 4, 1833 – March 3, 1835); presented credentials as a National Republican Member-elect to the Twenty-fourth Congress and served from March 4, 1835, to March 29, 1836, when the seat was declared vacant; subsequently elected as a National Republican to the same Congress; reelected as a Whig to the Twenty-fifth, Twenty-sixth, and Twenty-seventh Congresses and served from December 5, 1836, to March 3, 1843; chairman, Committee on Public Expenditures (Twenty-seventh Congress); unsuccessful candidate for reelection in 1842 to the Twenty-eighth Congress; elected as a Whig to the Twenty-ninth Congress (March 4, 1845 – March 3, 1847); was not a candidate for renomination in 1846; engaged in agricultural pursuits near Rutherfordton, North Carolina, where he died September 25, 1851.
 Link Information: William Alexander Graham (September 5, 1804August 11, 1875)  Question: Who is the older between James Graham and his brother?

Ex Output:
Answer: James Graham


Ex Input:
Passage: For many people, disco is the genre of music most readily associated with the 1970s. First appearing in dance clubs by the middle of the decade, (with such hits as "The Hustle" by Van McCoy), artist like Donna Summer, Gloria Gaynor popularized the genre and were described in subsequent decades as the "disco divas." The movie Saturday Night Fever was released in December 1977, starring John Travolta and featuring the music of the Bee Gees and several other artists. It had the effect of setting off disco mania in the United States. the Bee Gees' soundtrack to Saturday Night Fever became the one best selling album of all time. The Bee Gees and Donna Summer became the genres mega stars. The Bee Gees had 9 number 1 singles, and 12 top 10 hits on the Billboard Hot 100 Chart. Donna Summer had 4 number 1 singles, and 8 top 5 hits, 9 top 10s during the second half of the decade. Summer would be the first female artist of the modern era, to have the number one single and number album, simultaneously on the pop charts. She would accomplish this 3 times in 8 months. She was the first female artist to have 3 number one singles, and 5 top 10, and or; 5 top 5 singles in a calendar year (1979). The other prominent acts of the genre were KC and the Sunshine Band who scored 4 number one singles, The Village People, and Chic. KC and the Sunshine Band would enter the first week of the new decade (80s) with their fifth number one single, and Donna Summer would enter the new decade with her third number one double album.
 Link Information: The Bee Gees 
were a pop music group formed in 1958.  Question: How long had the Bee Gees been making music for by the year Saturday Night Fever was released?

Ex Output:

Answer: 19