Question: Which Audi Sport competitor at the 1985 World Rally Championship has also driven for Fiat, Opel and Lancia?
Context: The FIA World Rally Championship-2 or WRC-2 (formerly known as Super 2000 World Rally Championship or S-WRC), is a companion rally series to the World Rally Championship, and is driven on the same stages.  WRC-2 is limited to production-based cars homologated under the Super 2000, N4, R5 rules.  The series began in 2010 and split the Production World Rally Championship (P-WRC), which was previously open to both Super 2000 and Group N4 cars, into two separate competitions, both of which received their own FIA titles.  There was also a World Rally Championship Cup for Teams within the S-WRC but this was discontiniued after 2010. Apollo Automobil (Previously known as Gumpert Sportwagenmanufaktur GmbH) is a German supercar manufacturing company headquartered in Denkendorf.  Roland Gumpert, the founder of Apollo, once held the position of director of Audi Sport.  Under his management, Audi won a total of 25 World Rally Championship races and four World Rally Championship titles. Antonio "Tony" Fassina (born July 26, 1945) is a former rally driver from Italy.  He won the Italian Rally Championship in 1976 and 1979 driving a Lancia Stratos HF, and then again in 1981 behind the wheel of an Opel Ascona.  In 1982, he drove the Ascona to victory in the European Rally Championship.  He also competed with success in the Italian round of the World Rally Championship, Rallye Sanremo, scoring four top five results between 1976 and 1981, including outright victory in the 1979 event ahead of Walter Röhrl. Walter Röhrl (born 7 March 1947) is a German rally and auto racing driver, with victories for Fiat, Opel, Lancia and Audi as well as Porsche, Ford and BMW. The 1983 World Rally Championship was the 11th season of the Fédération Internationale de l'Automobile (FIA) World Rally Championship (WRC).  The season consisted of 12 rallies.  By this time, the schedule format had become generally stable, with only one or two changes to venues year to year.  1983 brought the return of Argentina to the schedule in place of Brazil.  Audi's Hannu Mikkola beat the defending world champion Walter Röhrl and his Lancia teammate Markku Alén to the drivers' title.  Lancia captured the manufacturers' title from Audi by just two points. Janusz Kulig (October 19, 1969 in Łapanów near Kraków – February 13, 2004 in Rzezawa near Bochnia, Poland) was a Polish rally driver.  He started his career behind the wheel of a Polski Fiat 126p and during his early years in rally he also drove a Toyota Corolla, a Opel Kadett, and a Renault Clio.  He became one of the top drivers while driving Renault Megane Maxi.  In this car he also won his first Polish Rally Championship title in 1997.  After 2 seasons with Renault, he signed a contract with Marlboro Mobil 1 team.  He changed his car to a Ford Escort WRC and in following years to a Ford Focus WRC.  Those years were most successful for Kulig.  He won another 2 Polish Championship titles and became well known in European and World rally.  Kulig spent the 2002 and 2003 seasons competing in the European Rally Championship (2nd place in 2002) and occasional WRC events.  In 2002 Janusz Kulig won the Rally du Valais.  His biggest success in WRC was 1st place in PCWRC in Sweden 2003 but after the rally he was stripped of his glory by FIA due to illegal modifications in his Mitsubishi Lancer EVO VII (the flywheel had different streak than the one approved by FIA).  For the 2004 Polish Championship Season he signed a contract to drive Fiat Punto S1600. The 2018 FIA World Rally Championship will be the forty-fifth season of the World Rally Championship, an auto racing championship recognised by the Fédération Internationale de l'Automobile (FIA) as the highest class of international rallying.  Teams and crews will compete in fourteen events for the World Rally Championships for Drivers, Co-drivers and Manufacturers.  Crews are free to compete in cars complying with World Rally Car and Group R regulations; however, only Manufacturers competing with 2017-specification World Rally Cars are eligible to score points in the Manufacturers' championship.  The series will once again be supported by the WRC-2 and WRC-3 championships and the WRC Trophy at every round, and by the Junior World Rally Championship at selected rounds. The Lancia Delta Group A is a Group A rally car built for the Martini Lancia by Lancia to compete in the World Rally Championship.  It is based upon the Lancia Delta road car and replaced the Lancia Delta S4.  The car was introduced for the 1987 World Rally Championship season and dominated the World Rally Championship, scoring 46 WRC victories overall and winning the constructors' championship a record six times in a row from 1987 to 1992, in addition to drivers' championship titles for Juha Kankkunen (1987 and 1991) and Miki Biasion (1988 and 1989), making Lancia the most successful marque in the history of the WRC and the Delta the most successful car. The 1985 World Rally Championship was the 13th season of the Fédération Internationale de l'Automobile (FIA) World Rally Championship (WRC).  The season consisted of 12 rallies following the same schedule as the previous season.  Peugeot Sport's Timo Salonen beat Audi Sport's Stig Blomqvist and Walter Röhrl to the drivers' title.  Peugeot won their first manufacturers' title, ahead of Audi and Lancia. The Lancia Rally ("Tipo 151", also known as the Lancia Rally 037, Lancia 037 or Lancia-Abarth #037 from its Abarth project code "037") was a mid-engine sports car and rally car built by Lancia in the early 1980s to compete in the FIA Group B World Rally Championship.  Driven by Markku Alén, Attilio Bettega, and Walter Röhrl, the car won Lancia the manufacturers' world championship in the 1983 season.  It was the last rear-wheel drive car to win the WRC.
Answer: Walter Röhrl