instruction:
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.
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Passage: Levette J. Davidson was a nationally acclaimed expert in folklore, especially that of Colorado and the West. He was born in Eureka, Illinois May 16, 1894, one of four children. Because his grand uncle was past-President of Eureka College, a Christian seminary, Davidson was reared in the school's shadow with the option of becoming either a teacher or a preacher. He chose teaching and was awarded his B.A. from Eureka in 1915. A year later he received his A.M. degree from the University of Illinois where he received Phi Beta Kappa honors. In 1917 he earned his M.A. in social science and history at Harvard University. __During World War I, he served with the Tenth Infantry of the Forty-Sixth Division and also served as an army sergeant in Intelligence. Davidson and his wife Mary, also a graduate of Eureka, were married in 1918. At the end of the war, Davidson simultaneously taught and studied at the University of Michigan where he earned a Ph.D. in languages and literatures in 1922. He arrived in Denver later that year and began teaching at the University of Denver. Before arriving in Colorado, his academic specialty was eighteenth century England. Once in Denver, he realized that Western literature and folklore would be his life work. Davidson taught at the University of Denver until his death in 1957. His course topics ranged from studies of Shakespeare and other English literature, to folklore in the West. He began teaching news writing and eventually founded the journalism department at the University as well as the board of publications and the press club. He was the first faculty member elected to serve as president of the University Senate. In 1940 he became head of the English Department and from March to August 1953 he served as interim Chancellor. At the time of assuming his post, he remarked: There is hardly an organization on campus that I have not been connected with at one time or another. Davidson was named University Lecturer for 1956. Davidson was a director of the Colorado State Historical Society, the Modern Languages Association, the American Folklore Society, and the American Dialect Society. He was a charter member of the Denver Posse of the Westerners, an organization devoted to western folklore. In spare moments, Davidson conducted research, wrote outlines for plays, and authored a large number of articles. He contributed to a wide range of magazines from Western American to Shakespeare Quarterly. Additionally, Davidson authored several books on folklore. The most widely recognized is Rocky Mountain Tales, which presents regional folklore as well as true accounts of early events in the area. Levette Davidson died May 14, 1957.
 Link Information: Harvard University is a private Ivy League research university in Cambridge, Massachusetts Answer: Massachusetts
answer:
What state was the university Davidson got his M.A. from located in?


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Passage: Within weeks, many Americans could recite favorite lines from the record, including "the rubber schwan [swan] is mine", and "move ahead...with great vigah [vigor]", the latter lampooning the President's own words. The album poked fun at Kennedy's PT-109 history; the rocking chairs he used for his painful back; the Kennedy clan's well-known athleticism, football games and family togetherness; children in the White House; and Jackie Kennedy's soft-spoken nature and her redecoration of the White House; and many other bits of knowledge that the public was eager to consume. Kennedy himself was said to have given copies of the albums as Christmas gifts, and once greeted a Democratic National Committee group by saying, "Vaughn Meader was busy tonight, so I came myself." According to UPI reporter Merriman Smith, during a Cabinet meeting Kennedy played the entire record for everyone. At one press conference, Kennedy was asked if the album had produced "annoyment (sic) or enjoyment." He jokingly responded, "I listened to Mr. Meader's record and, frankly, I thought it sounded more like Teddy than it did me. So, now he's annoyed."
 Link Information: T-109 was a PT boat (patrol torpedo boat) last commanded by Lieutenant (junior grade) John F. Kennedy, future United States President, in the Pacific Theater during World War II Answer: World War II
answer:
What war were the boats like Kennedy was on used in?


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Passage: Timur's first appearance in the Caucasus was a response to Khan Tokhtamysh's marauding inroad into Northern Iran through the Caucasian lands in 1385. This marked an outbreak of outright hostility between the two Islamic monarchs. Timur responded by launching a full-scale invasion of the small frontier countries, which lay between the western border of his emerging empire and Tokhtamysh's khanate. After having overrun Azerbaijan and Kars, Timur marched into Georgia. The official history of his reign, Zafarnama, represents this campaign in Georgia as a jihad. Timur set out from Kars and assailed Samtskhe, the southernmost principality within the Kingdom of Georgia later in 1386. From there, he marched against Tbilisi which the Georgian king Bagrat V had fortified. The city fell on November 21, 1386, and King Bagrat V was captured and converted to Islam at sword point. The Georgian Chronicle and Thomas of Metsoph mention the apostasy of the king but represent it as a clever ruse which enabled him to earn a degree of trust of Timur. Bagrat was given some 12,000 troops to reestablish himself in Georgia whose government was run by Bagrat's son and co-ruler George VII during his father's absence at Timur's court. The old king, however, entered in secret negotiations with George who ambushed Bagrat's Islamic escort, and freed his father.
 Link Information: none Answer: none
answer:

How long did it take Timur to take over Tbilisi?