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'.
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Question: 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?

Answer: Answer: 3


Question: Passage: When Isabella first became queen, she was only three years old. The queen mother, Maria Christina of the Two Sicilies, served as regent. The first and foremost political division of the Isabeline era was between Carlists and Cristinos (or Isabelinos), the former being supporters of Infante Carlos, Count of Molina, a rival claimant to the throne and the latter being supporters of Maria Christina and Isabella. The former supported absolute monarchism and the traditionalism of the Antiguo Régimen ("Old Regime"); they were uniformly close to the Roman Catholic Church, and generally clericalist. The latter were generally supporters of constitutional monarchy (although some, including Maria Christina herself, were more inclined toward enlightened absolutism); they were liberals of one stripe or another, ranging from liberal conservatives and those whose liberalism was strictly economic to social liberals. In the 1830s, these two groups faced off in the First Carlist War, which the Cristinos won. The terms of surrender—notably the Convention of Vergara—left an opportunity for relatively moderate Carlists to continue to play a role in the country's politics, and many did so over the ensuing decades.
 Link Information: The queen mother, Maria Christina of the Two Sicilies, served as regent. Question: What was the age of the person who was the mother of the reigning queen when she began serving as regent?

Answer: Answer: 27


Question: Passage: His grandfather and father Holmes Rolston, and Holmes Rolston Jr (who did not use the Jr) were Presbyterian ministers. Rolston III was married on June 1, 1956 to Jane Irving Wilson, with whom he has a daughter and son. He holds a B.S. in physics and mathematics from Davidson College (1953) and a Bachelor of Divinity degree from Union Presbyterian Seminary (1956). He was ordained to the ministry of the Presbyterian Church (USA) also in 1956. He received a Ph.D. from the University of Edinburgh in 1958; his advisor was Thomas F. Torrance. He earned an M.A. in the philosophy of science from the University of Pittsburgh in 1968, beginning his career later that year as an assistant professor of philosophy at Colorado State University and becoming a full professor in 1976. He became a University Distinguished Professor in 1992. He gave the Gifford Lectures, University of Edinburgh, 1998-1999. He was named Templeton Prize laureate in 2003. He has lectured by invitation on all seven continents.  Colorado State University inaugurated the Holmes Rolston Endowed Chair in Environmental Ethics in October 2016; for the inaugural lecture by Kenneth Shockley, click here..
 Link Information: 

The University of Pittsburgh (commonly referred to as Pitt) is a state-related research university in Pittsburgh, Pennsylvania. Question: In which state did Rolston III earn his Masters in philosophy of science?

Answer:
Answer: Pennsylvania


