Question: The 2012 British GT Championship was won by a car that was first introduced in what year?

full_context: Document 1: 2004 British GT Championship: The 2004 British GT season consisted of an eight-round series of sports car racing in the British GT Championship, with each round consisting of two races. The series was open to N-GT and GT Cup class cars. Jonathan Cocker won the N-GT Class Driver's Championship, whilst Adam Wilcox and Ni Amorim shared the GT Cup Driver's Championship.
Document 2: 2006 British GT Championship: The 2006 British GT season consisted of a fourteen-round series of sports car racing in the British GT Championship. The season consisted of two 2-hour enduros at Donington Park and Silverstone, with 4 other double 1 hour-race events held in England, 2 in France (held alongside the FFSA GT Championship) and 1 in Ireland. It was contested by GT2 cars, the renamed GT3 class (now GTC), and a new GT3 class conforming with new FIA regulations. This would be the last year of competition for GT2 cars, with very low grids and thus half points being awarded at most races. The following year, GT3 became the main class, with GTC supporting.
Document 3: 2016 British GT Championship: The 2016 British GT Championship will be the 24th British GT Championship. The season will begin on 17 April at Brands Hatch and finish on 11 September at Donington Park, after nine rounds held over seven meetings. After using Avon Tyres since 2006, the championship will switch to Pirelli tyres this season in order to mirror that of other GT3 and GT4 categories promoted by Stéphane Ratel Organisation.
Document 4: 2017 British GT Championship: The 2017 British GT Championship will be the 25th British GT Championship, a sports car championship promoted by the Stéphane Ratel Organisation (SRO). The season will begin on 15 April at Oulton Park and finish on 24 September at Donington Park, after ten rounds held over seven meetings.
Document 5: Michael Caine (racing driver): Michael Caine (born 13 August 1969 in Cambridge) is a British auto racing racing driver. He currently competes in the British GT Championship and the British Touring Car Championship. He was the 2012 British GT champion along with Daniele Perfetti.
Document 6: 2017 Intercontinental GT Challenge: The 2017 Intercontinental GT Challenge will be the second season of the Intercontinental GT Challenge. The season features four rounds, starting with the Liqui Moly Bathurst 12 Hour on 5 February, and concluding with the Sepang 12 Hours on 10 December. Laurens Vanthoor is the defending drivers' champion and Audi is the defending manufacturers' champion.
Document 7: 2012 British GT Championship: The 2012 Avon Tyres British GT season was the 20th season of the British GT Championship. The season began on 9 April at Oulton Park and finished on 30 September at Donington Park, after ten rounds held over seven meetings. Motorbase Performance drivers Michael Caine and Daniele Perfetti won the GT3 category in a Porsche 997 GT3-R, Team WFR's Jody Fanin and Warren Hughes won the GT4 championship driving a Ginetta G50, while Ryan Hooker and Gary Eastwood took the GTC title in a Ferrari 458 Challenge driving for FF Corse.
Document 8: Porsche RS Spyder: The RS Spyder (Type 9R6) is a racing car designed by Porsche in conjunction with Penske to compete in Le Mans Prototype Class 2 (LMP2) racing. The car takes its name from the legendary 550 Spyder of the 1950s (combined with Porsche's common "RennSport" "(lit.: racing sports)" designation). The car marked Porsche's first return to the top level of sports prototype racing since the firm abandoned its Porsche LMP in 1999.
Document 9: McLaren F1 GTR: The McLaren F1 GTR was a racing variant of the McLaren F1 sports car first produced in 1995 for grand touring style racing, such as the BPR Global GT Series, FIA GT Championship, JGTC, and British GT Championship. It is most famous for its overall victory at the 1995 24 Hours of Le Mans where it won against faster purpose-built prototypes. McLaren F1 GTRs raced internationally until 2005 when the final race chassis was retired.
Document 10: Group GT3: Group GT3, known technically as Cup Grand Touring Cars and commonly referred to as simply GT3, is a set of regulations maintained by the Fédération Internationale de l'Automobile (FIA) for grand tourer racing cars designed for use in various auto racing series throughout the world. The GT3 category was initially created in 2005 by the SRO Group as a third rung in the ladder of grand touring motorsport, below the Group GT1 and Group GT2 categories which were utilized in the SRO's FIA GT Championship, and launched its own series in 2006, the FIA GT3 European Championship. Since then, Group GT3 has expanded to become the de facto category for many national and international grand touring series, although some series modify the ruleset from the FIA standard. By 2013, nearly 20 automobile manufacturers have built or been represented with GT3 machines.
Document 11: British GT Championship: The Avon Tyres British GT Championship (previously known as the BRDC GT Championship) is a sports car racing series based in the United Kingdom, although selected races do take place outside of the country. The series was originally created by the British Racing Drivers' Club in 1993 and, for its first two seasons, was known as the National Sports GT Challenge. The series is currently run by the Stéphane Ratel Organisation, while Pirelli began its first season as the championship's official sole tyre supplier in 2016.
Document 12: Porsche 911 GT3: The Porsche 911 GT3 is a high performance version of the Porsche 911 sports car primarily intended for racing. It is a line of high-performance models, which began with the 1973 911 Carrera RS. The GT3, introduced in 1999, is named after the Fédération Internationale de l'Automobile (FIA) Group GT3 class, created in 2005, in which it was designed to compete.
Document 13: Porsche GT3 Cup Challenge Australia: The Porsche GT3 Cup Challenge Australia is a sports car racing series open to drivers of Porsche 911 GT3 Cup cars. The series was first held in 2008 to fill the void between club racing and the Australian Carrera Cup Championship and Australian GT Championship for Porsche owners. The series primarily consists of Type 996 and Type 997 Porsche 911 GT3 Cup cars, with each model competing in a different class, though other models are eligible to compete.
Document 14: Porsche 993: 993 is the company's internal name for the version of the Porsche 911 model manufactured and sold between late 1993 and early 1998 (model years 1995-1998 in the United States), replacing the 964. Its discontinuation marked the end of air-cooled Porsches, with the 993 being the last air-cooled 911. The 993 generation of the 911 is often referred to as the best and most desirable of the 911 series, not only because of its beauty, but also because its performance is very good, even by modern standards, and the 993 was "the last complete 'modern classic'"; "the 993 was and forever will be that last fresh breath of air that Porsche gave the world; elegance and muscle all in one package." The book "Porsche 993 - Essential Companion" refers to the 993 as the "King of Porsche," and it is generally acknowledged as "The purists' Holy Grail."
Document 15: Porsche 911 GT2: The Porsche 911 GT2 is a high-performance sports car built by the German manufacturer Porsche from 1993 to 1998, 2001 to 2005, 2007 to 2012, and then since 2018 (as the "GT2 RS"). It was based on the 911 Turbo, and uses a similar twin-turbocharged engine, but features numerous upgrades, including engine upgrades, larger brakes, and stiffer suspension calibration. The GT2 is significantly lighter than the Turbo due to its use of rear-wheel-drive instead of all-wheel-drive, and the lightening or removal of interior components. As a result, the GT2 is the most expensive and the highest trim level within the 911 lineup.
ground_truth: 1999