Question: What was the name of the Brazilian-born, championship frontrunner who retired just before the finish line of the 2009 Valencia Street Circuit in Valencia, Spain?
Context: The 2009 Valencia Superbike World Championship round was the third round of the 2009 Superbike World Championship season.  It took place on the weekend of April 3–5, 2009 at the Circuit de Valencia in Valencia, Spain. The Marina Bay Street Circuit (otherwise known as the Singapore Street Circuit) is a street circuit around Singapore's Marina Bay and is the venue for the Singapore Grand Prix.  The track is 5.065 km long in a harbourside location similar in style to the Circuit de Monaco and the Valencia Street Circuit. The 2012 Valencia GP2 Series round and the 2012 Valencia GP3 Series round was a group of motor races held at the Valencia Street Circuit in the Spain for the GP2 and GP3 Series championships.  The races, held on 23 and 24 June, were in support of the European Formula One Grand Prix.  The GP2 races were the sixth round of the 2012 GP2 championship, while the GP3 races formed the third round of the 2012 GP3 season. The 2012 European Grand Prix (formally, the 2012 Formula 1 Grand Prix of Europe) was a Formula One motor race that was held at the Valencia Street Circuit in Valencia, Spain on 24 June 2012.  It was the eighth round of the 2012 championship season, and the final time the circuit hosted the European Grand Prix.  It was Fernando Alonso's second Grand Prix win in Spain after the 2006 Spanish Grand Prix held at Barcelona.  Michael Schumacher finished third at the age of 43 years and 173 days, the oldest to climb to the podium since Jack Brabham's second-place finish at the 1970 British Grand Prix.  It was Schumacher's best result since his comeback in 2010 and the final podium finish of his Formula One career. The Valencia Street Circuit (, Spanish: "Circuito Urbano de Valencia" ) was a street circuit in Valencia, Spain which hosted the Formula One European Grand Prix for five years (2008–2012).  The first race meeting on the circuit was held over the 23/24 August 2008 weekend, with Felipe Massa winning the main event, the European Grand Prix, after starting from pole position.  The circuit uses the roads skirting the city's harbour and America's Cup port area – including a section over a 140 m swing bridge, and also includes some roads designed exclusively for racing purposes by the German architect Hermann Tilke, who also designed the infrastructure buildings for the circuit.  The 2012 edition took place on 24 June and was the last to go under the name of the European Grand Prix until 2016, when the Baku City Circuit took over the name.  It has not been used since 2013 after a deal fell through to alternate this venue with Catalunya in Barcelona to host the Spanish Grand Prix. The European Grand Prix (also known as the Grand Prix of Europe) was a Formula One event that was introduced during the mid-1980s and was held regularly from until .  A recent host venue for this event was the Valencia Street Circuit in Valencia, Spain, hosting the race from until 2012.  The race was removed from the calendar in .  In , the race returned, being run on a street circuit in Baku, Azerbaijan, but was subsequently discontinued as the Baku round was renamed the Azerbaijan Grand Prix in . The 2009 Valencian GP2 round was the seventh round of the 2009 GP2 Series season.  It was held on August 22 and 23, 2009 at Valencia Street Circuit at Valencia, Spain.  The race was used as a support race to the 2009 European Grand Prix.  Last year's race was quite eventful, with championship frontrunners Giorgio Pantano and Bruno Senna retiring on the last lap, with Senna retiring just before the finish line.  Past Winners include last year's Campos duo Vitaly Petrov and Lucas di Grassi, who both competed this year.  This race saw a driver reshuffle with Davide Valsecchi moving to Barwa Addax Team in place of Romain Grosjean who now races in F1.  Formula Three Euroseries Race Winner Stefano Coletti replaces Valsecchi at Durango.  The round also saw the departure of FMS, who sold their stake back to Scuderia Coloni. The 2009 European Grand Prix (formally the LIII Telefónica Grand Prix of Europe) was a Formula One motor race held on 23 August 2009 at the Valencia Street Circuit in Valencia, Spain.  It was the 11th race of the 2009 Formula One season.  The race was contested over 57 laps, an overall race distance of 308.9 km (191.9 mi).  The winner was Rubens Barrichello for Brawn GP after starting from third on the grid.  The 2008 world champion Lewis Hamilton finished second for McLaren-Mercedes, while 2007 world champion Kimi Räikkönen finished in third for Ferrari.  Championship leader Jenson Button finished in seventh for the second race in a row, but extended his lead as Red Bull Racing's Mark Webber and Sebastian Vettel both failed to score. Bruno Senna Lalli (] , born 15 October 1983) is a Brazilian professional racing driver currently racing for Rebellion Racing in the FIA World Endurance Championship.  He is the nephew of the late Ayrton Senna, three-time Formula One world champion.  Senna raced in Formula One from 2010–12.  He made his début driving for Hispania Racing in 2010, raced for Renault from August 2011 as a replacement for Nick Heidfeld, and drove for the Williams team in 2012.  Between 2014–16, he drove for Mahindra Racing in Formula E.  His mother is Ayrton's older sister, Viviane.  His father, Flávio Lalli, died in a motorcycle crash in 1996.  The colour scheme of Bruno's helmet is a slightly modified version of that used by his uncle Ayrton Senna. The 2008 FIA Formula One World Championship was the 62nd season of Formula One motor racing, recognised by the Fédération Internationale de l'Automobile (FIA) — the governing body of motorsport — as the highest class of competition for open-wheel racing cars.  It featured the 2008 Formula One World Championship.  The season was contested over eighteen rounds, which started in Australia on 16 March and ended in Brazil on 2 November.  The 2008 season saw the debut of the Singapore Grand Prix, which was held at the Marina Bay Street Circuit, in Marina Bay, Singapore and was the first Formula One race held at night.  The European Grand Prix moved to a new venue at the Valencia Street Circuit, in Valencia, Spain
Answer: Bruno Senna