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.

[Q]: Passage: Since about 560, the Avars had ruled over large parts of the Pannonian Basin and Carantania southeast of Francia, though in the last decades, the Avar Khaganate had to deal with Bulgarian and Croat incursions. To secure the frontier of his empire and the traffic on the trade routes to the east, Charlemagne allied with Khan Krum of Bulgaria and the Croatian duke Vojnomir, and from 791 launched several campaigns against the Avars, where he, according to the Vita Karoli Magni, encountered only modest opposition. In 796 Carolingian forces under Charlemagne's son Pepin of Italy destroyed the main Avar fortress called the Ring of the Avars and made the Khagan a Frankish vassal, while the remaining Avars retreated behind the Tisza River. The victory is perpetuated by the poem De Pippini regis Victoria Avarica. 
 Link Information: Pepin or Pippin (or Pepin Carloman, Pepinno, April 773 – 8 July 810) Answer: 23
[A]: How old was Charlemagne's son when he destroyed the Ring of the Avars?


[Q]: Passage: Zeta Aurigae was first recognized as a spectroscopic binary by William Hammond Wright while analyzing photographic plates taken at Lick Observatory between 1898 and 1908. This star is among those earlier described by Antonia Maury as having a composite spectrum. The first orbit was determined in 1924 by William Edmund Harper using measurements taken at Dominion Observatory, his orbital elements are very similar to the most recent determinations. Harper also noticed that the composite nature of the spectrum had disappeared on the one plate when the K type primary was nearest the sun indicating a possible eclipse. In 1932 the eclipsing binary nature of the system was confirmed by Paul Guthnick, Heribert Schneller and independently Josef Hopmann.
 Link Information: none Answer: none
[A]: What was size of the largest telescope in operation when the photographic plates of Zeta Aurigae were exposed?


[Q]: Passage: Shaw was born on 13 July 1930 to Lieutenant Colonel W. A. Shaw, MC and Mrs E. Shaw (née Malley). Between 1943 and 1948, he was educated at Epsom College, a public school in Epsom, Surrey. He was a member of the school's Rugby XV and Hockey XI. He was also won the Smith-Pearse Botany Prize. He went up to Gonville and Caius College, Cambridge in 1950; earning a Bachelor of Arts (BA), later promoted to Master of Arts (MA). Having studied at Westminster Hospital Medical School, he qualified MRCS, LRCP in 1954. He graduated Bachelor of Medicine, Bachelor of Surgery (MB BCh) from the University of Cambridge in 1955. He undertook his two pre-registration house officer placements at Westminster Hospital as a casualty officer and at Kingston Hospital as a house surgeon and obstetrics house officer.
 Link Information: Founded in 1853  Answer: 77
[A]:
How long had Epsom College been in existence for the year Shaw was born?