Question: What position did a New Zealand race-car designer and driver start in at the 1968 Belgian Grand Prix?  

Context paragraphs:
2017 Belgian Grand Prix: The 2017 Belgian Grand Prix (formally known as the 2017 Formula 1 Pirelli Belgian Grand Prix) was a Formula One motor race that was held on 27 August 2017 at the Circuit de Spa-Francorchamps in Stavelot, Belgium.  The race, scheduled to be contested over forty-four laps, was the twelfth round of the 2017 Formula One season, and marked the seventy-third running of the Belgian Grand Prix and the sixtieth time the race was held at Spa-Francorchamps.

2000 Belgian Grand Prix: The 2000 Belgian Grand Prix (formally, the LVIII Foster's Belgian Grand Prix) was a Formula One motor race held on 27 August 2000 at the Circuit de Spa-Francorchamps, Stavelot, Belgium.  It was the thirteenth race of the 2000 Formula One season, and the 58th Belgian Grand Prix.  The 44-lap race was won by McLaren driver Mika Häkkinen, who started from the pole position.  Michael Schumacher finished second in a Ferrari, and Williams driver Ralf Schumacher was third.

2014 Belgian Grand Prix: The 2014 Belgian Grand Prix (formally the 2014 Formula 1 Shell Belgian Grand Prix) was a Formula One motor race held on 24 August 2014 at the Circuit de Spa-Francorchamps in Spa, Belgium.  It was the twelfth round of the 2014 Formula One season, and the 70th Belgian Grand Prix.  The 44-lap race was won by Daniel Ricciardo for the Red Bull Racing team, after starting from fifth position.  Nico Rosberg finished second in a Mercedes, with Valtteri Bottas third for the Williams team.

Bruce McLaren: Bruce Leslie McLaren (30 August 1937 – 2 June 1970) was a New Zealand race-car designer, driver, engineer and inventor.

2011 Belgian Grand Prix: The 2011 Belgian Grand Prix, formally the 2011 Formula 1 Shell Belgian Grand Prix, was a Formula One motor race that was held on 28 August 2011, at Circuit de Spa-Francorchamps in Spa, Belgium.  It was the twelfth round of the 2011 Formula One season and the 67th Belgian Grand Prix to be held.  The 44-lap race was won by Red Bull's Sebastian Vettel, the drivers' championship leader, after starting from pole position.  Vettel's teammate Mark Webber finished in second place, and Jenson Button completed the podium in third position for McLaren.

2010 Belgian Grand Prix: The 2010 Belgian Grand Prix was the 66th Belgian Grand Prix and the thirteenth round of the 2010 Formula One season.  It was held at Circuit de Spa-Francorchamps in Spa, Belgium on 29 August 2010.  Williams driver Rubens Barrichello celebrated his 300th Grand Prix.  Lewis Hamilton claimed victory, to take the championship lead from pole-sitter Mark Webber, who finished second.  Robert Kubica finished in third position, taking his last Formula One podium finish to date.

2012 Belgian Grand Prix: The 2012 Belgian Grand Prix (formally the 2012 Formula 1 Shell Belgian Grand Prix) was a Formula One motor race that took place at the Circuit de Spa-Francorchamps in Spa, Belgium on 2 September 2012, the first race after a five-week summer break.  It was the twelfth race of the 2012 season, and the seventy-seventh running of the Belgian Grand Prix.

1968 Belgian Grand Prix: The 1968 Belgian Grand Prix was a Formula One motor race held at the Spa-Francorchamps Circuit on 9 June 1968.  It was race 4 of 12 in both the 1968 World Championship of Drivers and the 1968 International Cup for Formula One Manufacturers.  The 28-lap race was won by McLaren driver Bruce McLaren after he started from sixth position.  Pedro Rodríguez finished second for the BRM team and Ferrari driver Jacky Ickx came in third.

2005 Belgian Grand Prix: The 2005 Belgian Grand Prix (formally the LXII Belgian Grand Prix) was a Formula One motor race held on 11 September 2005 at Circuit de Spa-Francorchamps in Spa, Belgium.  It was the sixteenth round of the 2005 Formula One season and the sixty-second Belgian Grand Prix.  The 44-lap race was won by Kimi Räikkönen for the McLaren team, from a second position start.  Fernando Alonso finished second in a Renault, with Jenson Button third for the BAR team.

BRM P133: The BRM P133 was a Formula One racing car which raced in the 1968 and 1969 Formula One seasons.  It was powered by a 3.0-litre V12 engine.  Its best results were a second place at the 1968 Belgian Grand Prix, two third places at the 1968 Dutch Grand Prix and 1968 Canadian Grand Prix, as well as a fastest lap at the 1968 French Grand Prix all by Pedro Rodríguez.

Supporting paragraphs: 1968 Belgian Grand Prix Bruce McLaren
Answer: sixth position