 Complete the following phrase:  The 2016 Red Bull Ring GP2 and GP3 Series rounds were a pair of motor races that were held on 2 and 3 July 2016 at the Red Bull Ring in Austria as part of the GP2 Series and GP3 Series. It was the fourth round of the 2016 GP2 season and the second round of the 2016 GP3 season. The race weekend supported the 