This pair of GP2 Series motor races supported a Formula One motor race won by what driver?
Nico Rosberg
Title: 2014 Bahrain GP2 Series round
Passage: The 2014 Bahrain GP2 Series round was a pair of motor races held on 6 and 7 April 2014 at the Bahrain International Circuit in Sakhir, Bahrain as part of the GP2 Series.  It was the first round of the 2014 GP2 Series and was run in support of the 2014 Bahrain Grand Prix.  The first race, a 32-lap feature event, was won by ART Grand Prix driver Stoffel Vandoorne after starting from second position.  Julián Leal finished second for the Carlin team and DAMS driver Jolyon Palmer came in third.  Palmer won the second race, a 23-lap sprint event, ahead of Rapax driver Simon Trummer in second and Leal third.
Title: 2014 Red Bull Ring GP2 and GP3 Series rounds
Passage: The 2014 Austria GP2 Series round was a pair of motor races held on June 21 and 22, 2014 at the Red Bull Ring in Spielberg, Austria as part of the GP2 Series.  It is the fourth round of the 2014 season.  The race weekend supported the 2014 Austrian Grand Prix.
Title: 2014 Austrian Grand Prix
Passage: The 2014 Austrian Grand Prix (formally the Formula 1 Grosser Preis Von Österreich 2014) was a Formula One motor race held on 22 June 2014 at the Red Bull Ring in Spielberg, Austria.  It was the eighth round of the 2014 season and the 28th Austrian Grand Prix and the first to be held since 2003.  The 71-lap race was won by Mercedes driver Nico Rosberg after starting from third position.  His teammate Lewis Hamilton finished second with Valtteri Bottas third for the Williams team.
2014 Red Bull Ring GP2 and GP3 Series rounds 2014 Austrian Grand Prix