Table:
text: 1952 Formula One season
East German Championship
East German Championship
Race_Name Circuit Date_ Winning_driver Constructor_ Report
I Rostock Osthafenkurs Rostock 20 April Paul Greifzu BMW - Eigenbau Report
I Bernau Autobahnschleife Bernau 4 May Rudolf Krause BMW - Reif Report
I Dessau Autobahnspinne Dessau 11 May Fritz Riess Veritas-Meteor Report
III Leipzig Stadtparkrennen Leipzig 2 June Edgar Barth IFA - Kollektiv Report
III Strassen-Rennen Halle-Saale-Schleife Halle-Saale-Schleife 8 June Edgar Barth IFA - Kollektiv Report
I Strassen-rennen Leipzig Leipzig 17 August Hans Stuck AFM - BMW Report
V DMV Grenzlandringrennen Grenzlandring 31 August Toni Ulmen Veritas Report

Question: How many winners did the Dessau autobahn spider have in the GDR championship in 1952 in the Formula 1 season?

Question: On which date did a race take place on the Halle-Saale-Schleife race track in the GDR championship of the 1952 Formula 1 season?

Question: How many races take place in Dessau in the 1952 Formula 1 season of the GDR championship?

Question: Which races did Paul Greifzu win in the GDR championship of the 1952 Formula 1 season?