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.
question:
Passage: In the popular market, Opel and Volkswagen are most well known. Opel was a bicycle company that started making cars in 1899; General Motors bought it out in 1929, but the Nazi government took control, and GM wrote off its entire investment. In 1948, GM returned and restored the Opel brand. Volkswagen is dominant in the popular market; it purchased Audi in 1964, which eventually led to the formation of today's Volkswagen Group. Volkswagen's most famous car was the small, beetle-shaped economical "people's car", with a rear-mounted, air-cooled engine. It was designed in the 1930s by Ferdinand Porsche upon orders from Adolf Hitler, who was himself a car enthusiast. However, production models only appeared after the war; until then, only rich Germans had automobiles. By 1950, Volkswagen was the largest German automobile producer. Today, the Group is one of the three biggest automotive companies in the world, and the largest in Europe; and is now part-owned by Porsche Automobil Holding SE. , seven different car manufacturers belong to the industrial concern: Volkswagen, Audi AG, Bugatti Automobiles SAS, Automobili Lamborghini S.p.A., Bentley Motors Limited, SEAT, S.A., Škoda Auto, along with commercial vehicle makers Volkswagen Commercial Vehicles, MAN AG and Scania AB. During German reunification West Germany incorporated non-large (near 200 thousands per year) production of Wartburg, Trabant cars and IFA trucks in East Germany.
 Link Information: The company was founded in Rüsselsheim, Hesse, Germany, on 21 January 1862, by Adam Opel Answer: 21 January 1862
answer:
When did the bicycle company open?


question:
Passage: Bithell independently developed an early version of the Thomas Was Alone video game in 2010 while working for Blitz Games, where he was a junior designer, and later a level designer on games such as Tak and the Guardians of Gross, , iCarly (video_game) and , from 2007 to 2011. He developed the prototype game in 24 hours and released it for free online through the Kongregate website, receiving 100,000 'plays' in the first week. He joined Bossa Studios in February 2011, working to expand the flash-based Thomas to a full title and learning how to use the Unity engine in his time there. The full game was released on 30 June 2012 and went on to sell over a million copies, winning a BAFTA at the 9th British Academy Games Awards in the "Best Performer" category (for narrator Danny Wallace) and receiving a further two nominations ("Best Original Music" and "Best Story"). He left Bossa in January 2013 to "concentrate on indie development". He since worked on a Robin Hood-based stealth game named Volume, which was released on 18 August 2015 for Windows, OS X, and PlayStation 4 and Vita platforms. In 2016, Bithell released EarthShape, a virtual reality game for Google Daydream. Bithell collaborated with composer Russell Shaw and animator Tim Borelli on the project. The game featured voice acting from British comedian Sue Perkins. In August 2017, Bithell released a new game Subsurface Circular, a first of what he calls "Bithell Shorts" that are designed as short, focused narrative games. In May 2018, Bithell released another short titled Quarantine Circular.
 Link Information: none Answer: none
answer:
How many employees did Blitz Games have the year that Bithell joined Bossa Studios?


question:
Passage: This led to his role as collaborator over many years with Michael Atiyah, initially via the part played by periodicity in K-theory. Bott made important contributions towards the index theorem, especially in formulating related fixed-point theorems, in particular the so-called 'Woods Hole fixed-point theorem', a combination of the Riemann–Roch theorem and Lefschetz fixed-point theorem (it is named after Woods Hole, Massachusetts, the site of a conference at which collective discussion formulated it). The major Atiyah–Bott papers on what is now the Atiyah–Bott fixed-point theorem were written in the years up to 1968; they collaborated further in recovering in contemporary language Ivan Petrovsky on Petrovsky lacunas of hyperbolic partial differential equations, prompted by Lars Gårding. In the 1980s, Atiyah and Bott investigated gauge theory, using the Yang–Mills equations on a Riemann surface to obtain topological information about the moduli spaces of stable bundles on Riemann surfaces. In 1983 he spoke to the Canadian Mathematical Society in a talk he called "A topologist marvels at Physics".
 Link Information: Sir Michael Francis Atiyah (; 22 April 1929 – 11 January 2019) Answer: 39
answer:

How old was Michael Atiyah when he and Bott finished the Atiyah-Bott fixed-point theorem?