Question: Who is the German-Mauritian Formula One driver that won the title with the Mercedes-Benz team HWA AG in the 2015 Deutsche Tourenwagen Masters?

full_context: Document 1: 2018 Deutsche Tourenwagen Masters: The 2018 Deutsche Tourenwagen Masters is planned to be nineteenth season of the Deutsche Tourenwagen Masters, since the series' resumption in 2000. 2018 will be the final season for the current 4.0 litre V8 normally-aspirated engine package that débuted in the inaugural reborn season; as the brand new engine package will be introduced for the following season as a part of the Class One prospect with Japanese Super GT GT500 cars. 2018 will also be the final season for Mercedes AMG in DTM due to Mercedes AMG switching focus to FIA Formula E from 2019-20 season and thus confirming the end of Mercedes AMG in DTM after 19 years.
Document 2: 2006 Deutsche Tourenwagen Masters: The 2006 Deutsche Tourenwagen Masters season was the seventh Deutsche Tourenwagen Masters season after the series' was resumed in 2000. The number of race weekends was reduced, from eleven in 2005, to ten for the 2006 season. Each track hosted one race, with the exception of Hockenheim, which hosted two. As in 2005, each event consisted of one race of approximately one hour, with two compulsory pit stops for each car. The Championship was won by Bernd Schneider driving a AMG-Mercedes C-Klasse 2006 for the HWA Team.
Document 3: Pascal Wehrlein: Pascal Wehrlein (born 18 October 1994) is a German-Mauritian Formula One driver who is currently racing for Sauber. Holding dual nationality of Germany and Mauritius, he races under the German flag in Formula One. He had previously raced in the DTM, winning the title with the Mercedes-Benz team HWA AG in 2015. In 2014 Wehrlein became the youngest driver to win a DTM race at the age of 19 and the youngest to win the title in 2015 at the age of 20.
Document 4: Antonio Giovinazzi: Antonio Giovinazzi (born 14 December 1993) is an Italian racing driver. He was the 2015 FIA European Formula 3 Championship runner-up and raced with Prema in the 2016 International GP2 Series, finishing in second place with five wins and eight overall podiums. Giovinazzi has been chosen by Scuderia Ferrari as their FIA Formula 1 third and reserve driver for the 2017 season. He made his Formula One Grand Prix debut for Sauber at the 2017 Australian Grand Prix, replacing Pascal Wehrlein. He also replaced Wehrlein at the following Chinese Grand Prix as Wehrlein continued his recovery.
Document 5: Nico Hülkenberg: Nicolas Hülkenberg (] , born 19 August 1987) is a German professional racing driver currently racing for the Renault Sport F1 Team. In 2015, he also contested in two rounds of the 2015 FIA World Endurance Championship season for Porsche, winning the 2015 24 Hours of Le Mans in his first attempt. He was the 2009 champion of the GP2 Series, and is a previous champion of both the Formula 3 Euro Series and A1 Grand Prix, as part of A1 Team Germany. He is one of three drivers since 2005 to win the GP2 series championship in his debut season, the others being Lewis Hamilton and Nico Rosberg. s of September 2017 , Hülkenberg holds the record for the most Formula One career starts without a podium finish, a record he broke when he failed to finish in his 129th race (the 2017 Singapore Grand Prix) and in so doing passed Adrian Sutil's previous record of 128.
Document 6: 2011 Deutsche Tourenwagen Masters: The 2011 Deutsche Tourenwagen Masters season is a multi-event motor racing series largely based in Germany for highly modified touring car racing cars and is one of the most popular sedan car based motor racing series in the world. The series features professional motor racing teams and drivers is heavily supported by car manufacturers Audi and Mercedes-Benz. Each race features 18 V8 powered racing cars built according to the technical regulations of the Deutsche Tourenwagen Masters. It will be the twelfth season of Deutsche Tourenwagen Masters since the series' resumption in 2000. The 2011 season will be the first season that cars will not run on Dunlop tyres, instead running on Hankook tyres in the first year of a three-year control-tyre deal. It was the final season running the 4-door saloon style spec cars, which has been the series' sole car style requirements since 2004. It was also the final season that all DTM cars running with the manual gearbox shifters before all DTM cars switched to sequential semi-automatic gearbox paddle shifters at the following season.
Document 7: Romain Grosjean: Romain Grosjean (] ; born 17 April 1986) is a racing driver, currently racing for the Haas F1 Team. He races under the French flag in Formula One although he was born in Geneva and holds dual Franco-Swiss nationality.
Document 8: Formula One drivers from Germany: There have been 52 Formula One drivers from Germany including three world champions, one of whom is currently racing in the sport. Michael Schumacher holds many records in F1 including the most world championship titles and the most consecutive titles. In 2008 Sebastian Vettel became the youngest ever driver to win a race (which was later broken) and, in 2010, became the youngest world championship winner. In 2016, Nico Rosberg became the third driver from Germany to win the F1 drivers' championship. There are currently three German race drivers in Formula One.
Document 9: 2008 Deutsche Tourenwagen Masters: The 2008 Deutsche Tourenwagen Masters season was the ninth season of Deutsche Tourenwagen Masters since the series' resumption in 2000. The series began on 13 April at the Hockenheimring and finished on 26 October at the same venue, after eleven rounds. Timo Scheider won the title, having never previously won a race before the start of the season.
Document 10: Pierre Gasly: Pierre Gasly (born 7 February 1996 in Rouen) is a French formula racing driver, who was the 2014 Formula Renault 3.5 Series runner-up and the 2016 GP2 Series champion. He drives a Honda-powered car for Team Mugen in the 2017 Super Formula Championship. He will make his Formula One début at the 2017 Malaysian Grand Prix.
Document 11: Nico Rosberg: Nico Erik Rosberg (born 27 June 1985) is a German–Finnish former Formula One racing driver and current Formula One World Champion who drove for Williams F1 and Mercedes AMG Petronas under the German flag. Born in Germany to Finnish former world champion Keke Rosberg and his German wife Sina, he holds dual nationality, and briefly competed for Finland early in his racing career. However, he does not speak Finnish, although he is reported to be fluent in five languages.
Document 12: Max Verstappen: Max Emilian Verstappen (] ; born 30 September 1997) is a Belgian-Dutch racing driver who competes under the Dutch flag in Formula One with Red Bull Racing. Aged , he became the youngest driver to compete in Formula 1 at the 2015 Australian Grand Prix for Scuderia Toro Rosso. He is also the youngest driver to lead a lap during a Formula One Grand Prix, youngest driver to set the fastest lap during a Formula One Grand Prix, youngest driver to score points, youngest driver to secure a podium and youngest Formula One Grand Prix winner in history.
Document 13: 2010 Deutsche Tourenwagen Masters: The 2010 Deutsche Tourenwagen Masters season was the eleventh season of Deutsche Tourenwagen Masters since the series' resumption in 2000. The season began on 25 April at the Hockenheimring, and ended on 28 November at the Shanghai Street Circuit, after eleven rounds held in Germany, Spain, the Netherlands, the United Kingdom, Italy and China. Having finished second in 2008 and third in 2009, HWA Team's Paul di Resta became champion for the first time, having come out on top of a three-way title battle in Shanghai.
Document 14: 2019 Deutsche Tourenwagen Masters: The 2019 Deutsche Tourenwagen Masters is planned to be twentieth season of the Deutsche Tourenwagen Masters, since the series' resumption in 2000. This will be the first season that DTM will not feature Mercedes-AMG cars after the company announced their withdrawal from DTM on 25 July 2017 due to Mercedes-AMG will switch focus to FIA Formula E from 2019-20 season and thus confirming the end of Mercedes-Benz AMG in DTM after 19 years.
Document 15: 2015 Deutsche Tourenwagen Masters: The 2015 Deutsche Tourenwagen Masters season is the sixteenth season of the Deutsche Tourenwagen Masters, since the series' resumption in 2000. The season started on 2 May at Hockenheim, and ended on 18 October at the same venue, with Mercedes Benz driver Pascal Wehrlein clinching the Drivers' Championship, Mercedes Benz's HWA AG winning the Teams' Championship and BMW taking the Manufacturer's Championship after a total of nine events.
ground_truth: Pascal Wehrlein