Table:
text: 1990 Formula One season
Season review
Season review
Round Grand_Prix Date_ Location_ Pole_Position Fastest_Lap Winning_Driver Winning_Constructor Report
6 Mexican Grand Prix 24 June Hermanos Rodríguez Gerhard Berger Alain Prost Alain Prost Ferrari Report
7 French Grand Prix 8 July Paul Ricard Nigel Mansell Nigel Mansell Alain Prost Ferrari Report
8 British Grand Prix 15 July Silverstone Nigel Mansell Nigel Mansell Alain Prost Ferrari Report
9 German Grand Prix 29 July Hockenheimring Ayrton Senna Thierry Boutsen Ayrton Senna McLaren - Honda Report
10 Hungarian Grand Prix 12 August Hungaroring Thierry Boutsen Riccardo Patrese Thierry Boutsen Williams - Renault Report
11 Belgian Grand Prix 26 August Spa-Francorchamps Ayrton Senna Alain Prost Ayrton Senna McLaren - Honda Report
12 Italian Grand Prix 9 September Monza Ayrton Senna Ayrton Senna Ayrton Senna McLaren - Honda Report

Question: What is the pole position in the 1990 Formula 1 season for the German Grand Prix season review?