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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Question: 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

Answer: How old was Charlemagne's son when he destroyed the Ring of the Avars?


Question: Passage: In 1809, Walter Coffin sunk the first coal pit in the Rhondda, further up the valley in Dinas, but a lack of a transportation network greatly affected the profitability of coal mining as an industry in the region. Coffin tackled this problem by constructing a one-mile tramline which connected his mines in Dinas to a tramline built by Dr. Richard Griffiths at Denia (Pontypridd), which linked to a private canal that joined onto the Glamorganshire Canal at Treforest. Coffins tramline followed the southern bank of the River Rhondda and ran through Porth. The existence of the tramline made the development of the Porth and Cymmer region far more attractive, and by the middle of the 19th century there was an impetus to expand coal mining in the area. In 1841 Richard Lewis joined Coffin in trying to exploit the region with his level built at Cymmer. This resulted in the construction of around fifty miners' cottages, several of which were located in Porth. In 1844 Lewis Edwards of Newport and George Gethin of Penygraig opened a small level at Nyth-bran on the eastern borders of Porth, the villages' first coal mine. This was followed in 1845 by the sinking of the Porth Colliery by David James of Merthyr, the success of which saw him build the Llwyncelyn Colliery in 1951, also in Porth. By 1850 the Taff Vale Railway had been extended to Cymmer replacing the tramline, allowing direct access between the lower Rhondda and the ports of Cardiff.
 Link Information: It was opened in stages in 1840 and 1841. Answer: 10

Answer: How long had the Taff Vale Railway been in existence the year it was extended to Cymmer?


Question: Passage: Lin has worked at Pixar since he first joined in September 1997 as a layout artist on A Bug's Life (1998). He was the director of photography on The Incredibles (2004) and Up (2009), and a lead layout artist on Monsters, Inc. (2001) and Ratatouille (2007). He was also a contributing layout artist on Brave (2012) and Monsters University (2013). In 2015, Lin was the cinematographer on Pixar's Inside Out; his full credited title was "director of photography – camera and staging". On Inside Out, he pioneered Pixar's first use of a virtual camera lens based on an actual camera lens, so that the animation appears to be filmed on an actual camera. He later served as a layout artist on The Good Dinosaur (2015) and director of photography on Toy Story 4 (2019). In total, he has worked on over twenty Pixar projects, including feature films and short films.
 Link Information: Pixar began in 1979 as part of the Lucasfilm computer division Answer: 19

Answer:
How many years after the founding of Pixar was the movie A Bug's Life created?