Question: 2006 GP2 Series season was won by a man that won his first World Championship title in what year?

Context paragraphs:
2016 GP2 Series: The 2016 GP2 Series season was the twelfth season of the GP2 Series, a motor racing feeder series that was run in support of the 2016 FIA Formula One World Championship.  It was the final season run under the "GP2 Series" name, with the championship being rebranded as the FIA Formula 2 Championship from 2017.

2012 Marina Bay GP2 Series round: The 2012 Marina Bay GP2 Series round is a group of motor races that will be held at the Marina Bay Street Circuit in Marina Bay, Singapore for the GP2 Series championship, with the 2012 GP3 Series season having concluded at the previous round at Monza.  The races, which will be held on 22 and 23 July, will be in support of the Singapore Formula One Grand Prix, and represent the final round of the 2012 GP2 Series season.  The event marks the first time the GP2 Series has travelled to Singapore.

2006 Valencia GP2 series round: The 2006 Valencia GP2 Series round were a pair of motor races held on 8 and 9 April 2006 at the Circuit Ricardo Tormo in Valencia as part of the GP2 Series.  It was the first round of the 2006 GP2 season.

Dallara GP2/11: The Dallara GP2/11 is a racing car developed by Italian manufacturer Dallara for use in the FIA Formula 2 Championship, a feeder series for Formula One.  The GP2/11 is the overall third generation of car used by the GP2 Series and first generation of car used by the FIA Formula 2 Championship, and was introduced at the Yas Marina round of the 2011 season, replacing the Dallara GP2/08, which was also developed by Dallara.  The GP2/11 was scheduled to be used until the end of the 2013 season, in keeping with the series' philosophy of upgrading its chassis every three years, but series organisers decided to keep it in competition for another three-year cycle in a bid to cut costs in the category and to be used until the end of the 2016 season until the next-generation car introduced in 2017 season.  But due to another cost-cutting, GP2 Series announced Dallara GP2/11 will extend their service until the end of 2017 season and thus the next-generation car introduced in 2018 season.  As the GP2 Series is a spec series, the GP2/11 is raced by every team and driver on the grid.  Dallara GP2/11 scheduled to retire from competition after 2017 Yas Marina Formula 2 round.

2006 San Marino GP2 Series round: The 2006 San Marino GP2 Series round were a pair of motor races held on 22 and 23 April 2006 at the Autodromo Enzo e Dino Ferrari in Imola as part of the GP2 Series.  It was the second round of the 2006 GP2 season.

2006 GP2 Series: The 2006 GP2 Series season began at Valencia, Spain on 8 April 2006 and ended in Monza, Italy on 10 September 2006.  The season was won by Briton Lewis Hamilton, with Brazilian Nelson Angelo Piquet finishing second.

2006 European GP2 Series round: The 2006 European GP2 Series round were a pair of motor races held on 6 and 7 May 2006 at the Nürburgring in Nürburg as part of the GP2 Series.  It was the third round of the 2006 GP2 season.

2015 GP2 Series: The 2015 GP2 Series season was the eleventh GP2 Series season, a championship for open-wheel racing cars run as a support series to the 2015 Formula One World Championship.  Twenty-six drivers representing thirteen teams raced over eleven rounds, starting in Bahrain on 18 April and finishing in Abu Dhabi on 29 November.

Lewis Hamilton: Lewis Carl Davidson Hamilton, MBE, (born 7 January 1985) is a British racing driver who races in Formula One for the Mercedes AMG Petronas team.  A three-time Formula One World Champion, he is often considered the best driver of his generation and widely regarded as one of the greatest Formula One drivers in the history of the sport.  He won his first World Championship title with McLaren in 2008 before moving to Mercedes, where he won back-to-back titles in 2014 and 2015.  Hamilton has more race victories than any other British driver in the history of Formula One ( ), and holds records for the all-time most career points ( ), the most wins at different circuits (24), the all-time most pole positions ( ), as well as achieving the joint-most podium finishes in a season (17).  Hamilton is also the only driver to have won at least one Grand Prix in every season he has competed in.

2009 Algarve GP2 Series round: The 2009 Portuguese GP2 round was the tenth and final round of the 2009 GP2 Series season.  It wase held on September 19 and 20, 2009 at Autódromo Internacional do Algarve at Portimão, Portugal.  This race was the only race in the 2009 GP2 Series season that was not acting as a support race for Formula One, instead supporting an FIA GT Championship event.  As Nico Hülkenberg claimed the drivers title at the previous round in Monza, only the battle for the Teams championship could be fought in the Algarve.  This was the final GP2 race for Hülkenberg, as he will step up to Formula One in .  Durango again decided to miss a round after not starting in Italy either.

Supporting paragraphs: 2006 GP2 Series Lewis Hamilton
Answer: 2008