Question: The 2007 Firestone Indy 400 included a massive pile-up on lap 144 that ended the race for the four-time IndyCar champion of what nationality?

full_context: Document 1: Eddie Irvine: Edmund Irvine Jr. (born 10 November 1965) is a retired British racing driver from Northern Ireland. He was a Formula One driver between 1993 and 2002, and runner-up in the 1999 World Drivers' Championship, driving for Scuderia Ferrari.
Document 2: Patrick Carpentier: Patrick Carpentier (born August 13, 1971) is a Canadian professional auto racing driver. He is best known for his career in the Champ Car World Series and the IndyCar Series, where he got five wins and 24 podiums, as well as two third place championship finishes in 2002 and 2004. The long-time Champ Car driver switched to the IndyCar Series in 2005, but moved on Grand Am in 2007 and spent a bit more time running his ranch. After a few NASCAR races in 2007, he moved full-time into the series in 2008. Since 2009, he has only had part-time drives, so became a contractor and renovator in Montreal, trading in real estate in Las Vegas, as well as being a color commentator for television coverage of various racing series. He currently competes part-time in the NASCAR Sprint Cup Series, driving the No. 32 Ford Fusion for Go FAS Racing.
Document 3: Scott Mayer (racing driver): Scott Mayer (born August 31, 1964 in Franklin, Wisconsin) is a former driver in the Indy Racing League IndyCar Series. He participated in the first three races of the 2003 IndyCar Series season for PDM Racing and crashed in all three races. He then failed to complete rookie orientation for the Indy 500. He entered the 2005 Indianapolis 500 with A.J. Foyt Enterprises but again failed to complete rookie orientation. He also made four starts in the Indy Pro Series in 2004 and 2005. In 2010 he tested with Doran Racing at Putnam Park in Indiana. In 2011 he raced in the 24 Hours of Daytona for Starworks Motorsport. The team finished 44th. In 2012 he competed part-time in the Rolex Sports Car Series and finished 24th in Daytona Prototype points with a best finish of fifth at Road America. He has returned to the series in 2013.
Document 4: David Coulthard: David Marshall Coulthard, {'1': ", '2': ", '3': ", '4': "} ( ; born 27 March 1971), known as DC, is a British former Formula One racing driver turned presenter, commentator and journalist. He was runner-up in the 2001 Formula One World Drivers' Championship, driving for McLaren.
Document 5: 2009 Firestone Indy 300: The 2009 Firestone Indy 300 was the final race of the 2009 IndyCar season. This 297 mi race took place on October 10, at the 1.485 mi Homestead-Miami Speedway in Homestead, Florida near Miami. The race was telecast by Versus. Scotland's Dario Franchitti benefitted from late pit-stops for rivals Scott Dixon and Ryan Briscoe to take his second IndyCar Series title.
Document 6: 2007 United States Grand Prix: The 2007 United States Grand Prix (formally the XXXVI RBS United States Grand Prix) was a Formula One motor race held at the Indianapolis Motor Speedway in Speedway, Indiana, in the United States on 15 June 2007. The 73-lap race was the seventh round of the 2007 Formula One season and was won by McLaren-Mercedes driver Lewis Hamilton. His teammate, Fernando Alonso, finished the race in second position whilst Ferrari driver, Felipe Massa, completed the podium by finishing third. This was the debut race of the future world champion Sebastian Vettel.
Document 7: 2007 Indy Japan 300: The 2007 Indy Japan 300 was an IndyCar Series motor race held on April 21, 2007, at the Twin Ring Motegi in Motegi, Tochigi, Japan. It was the third race of the 2007 IndyCar Series season, the fifth annual edition of the Indy Japan 300 in the IndyCar Series, and the tenth anniversary running of the race (including its five years on the Championship Auto Racing Teams (CART) schedule). Andretti Green Racing driver Tony Kanaan won the race with a 0.4828 second margin of victory over Chip Ganassi Racing's Dan Wheldon. Dario Franchitti, Scott Dixon, and Sam Hornish Jr. rounded out the top five.
Document 8: 1998 Molson Indy Vancouver: The 1998 Molson Indy Vancouver was the fifteenth round of the 1998 CART FedEx Champ Car World Series season, held on September 6, 1998, at Concord Pacific Place in Vancouver, British Columbia, Canada. Dario Franchitti took his second consecutive win at this race, after passing Michael Andretti for the lead with seven laps left. In doing so, Franchitti became the first driver to win a race from pole for over a year.
Document 9: 2011 Indy Grand Prix of Sonoma: The 2011 Indy Grand Prix of Sonoma was the seventh running of the Indy Grand Prix of Sonoma and the fourteenth round of the 2011 IndyCar Series season. It took place on Sunday, August 28, 2011. The race contested over 75 laps at the 2.303 mi Infineon Raceway in Sonoma, California. Will Power led 71 of 75 laps, as Team Penske swept 1st–2nd–3rd on the podium. It was the first 1–2–3 finish in an Indycar race for Penske since Nazareth in 1994. Power closed to within 26 points of championship leader Dario Franchitti. Power also closed within 7 points of Franchitti for the "Mario Andretti Road Course Trophy". Simon Pagenaud substituted for Simona de Silvestro after she had complications renewing her visa, and U.S. Customs would not allow her into the country.
Document 10: Dario Franchitti: George Dario Marino Franchitti, MBE (born 19 May 1973), known professionally as Dario Franchitti, is a retired Scottish racing driver. He is a four time IndyCar Series champion (2007, 2009, 2010, 2011), a three-time winner of the Indianapolis 500 (2007, 2010, 2012) as well as a winner of the 24 Hours of Daytona (2008). Franchitti started his career in his native United Kingdom in the early 1990s, competing in Formula Vauxhall and Formula Three and was also the winner of the McLaren Autosport BRDC Award in 1992. After Franchitti did not secure a single-seater drive in 1995, he was contracted by the AMG team to compete in touring cars in the DTM and its successor — the International Touring Car Championship. Despite 2 seasons with relative success, the series folded at the end of the 1996 season, again leaving Franchitti without a drive. Mercedes placed Franchitti in CART in 1997 with the Hogan Racing team.
Document 11: Trevor Carlin: Trevor Carlin has had success in the junior motorsport formulas in a period spanning over 25 years. Carlin's career began in International Formula Three. As Team Manager of Bowman Racing, he assembled a talented group of engineers and achieved 1st, 2nd and 3rd places in the British Formula Three Championship in the team's first three seasons and won the 1989 Macau Grand Prix with David Brabham driving.
Document 12: 2007 Firestone Indy 200: The 2007 Firestone Indy 200 was a race in the 2007 IRL IndyCar Series, held at Nashville Superspeedway. It was originally to be held over 12 -July 14, 2007, as the eleventh round of the seventeen-race calendar. However, persistent rain pushed the race back to July 15, 2007.
Document 13: Firestone Indy 400: The Firestone Indy 400 was an IndyCar Series race held at Michigan International Speedway in Brooklyn, Michigan. The event was most recently held in 2007. From 1981 to 2001, the event was better-known as the Michigan 500, and was held in high prestige. During its heyday of the 1980s, the race was part of Indy car racing's 500-mile "Triple Crown".
Document 14: Colin Fleming (racing driver): Colin Fleming (born April 21, 1984 in San Diego, California) is an American former racing driver who completed in the Formula Renault 2.0 Eurocup, Formula Renault 2000 Germany and Formula Renault 3.5 in 2005 and 2006 with Jenzer Motorsport and Carlin Motorsport, he was also a member from the Red Bull Junior Team, Fleming finished 4th in the Formula Renault 2.0 Eurocup in 2004 and was rookie of the year in the Formula Renault 2000 Germany also in that year. He also raced against fellow American and Californian and future Formula One Driver Scott Speed. In 2005 he switched to the Formula Renault 3.5 with Swiss team Jenzer Motorsport, despite three DNS in the first 3 and missing one race of that season he finished 13th with 34 points with a best finish of 3rd in the second race in the Bugatti Circuit, to 2006 he switched to Carlin where he finished 6th in the first race of the season in Zolder, however he failed to qualify to the Second Race of the weekend and he finished 4th in Circuit de Monaco and 8th in both races in Istanbul Park, after this round he asked to leave Carlin and the Red Bull Junior Team, Red Bull officially released him and he was replaced by fellow Red Bull Junior Team member and Future Formula One Champion Sebastian Vettel, after leaving Red Bull, he returned to the United States to complete in the Atlantic Championship mid-season and he finished 20th with 45 points and since then has not raced anymore in a Major Series, until he decided to retire. Now Colin is a high-level executive with Salesforce.
Document 15: 2007 Firestone Indy 400: The 2007 Firestone Indy 400 was a race in the 2007 IRL IndyCar Series, held at Michigan International Speedway. It was held over the weekend of August 3–5, 2007, as the thirteenth round of the seventeen-race calendar. It was the last race, for the time being, for the IndyCar Series at the track. The race was also notable in that only seven cars were running at the finish, after a massive accident on lap 144 of the race which included Dario Franchitti flipping upside-down after hitting Dan Wheldon. Franchitti would walk away unharmed.
ground_truth: Scottish