[Table] header: Entrant | Constructor | Chassis | Engine | Driver | Rounds row 1 : Scuderia Sud Americana | Maserati | 250F | Maserati 250F1 2.5 L6 | Carlos Menditeguy | 1
row 2 : Ken Kavanagh | Maserati | 250F | Maserati 250F1 2.5 L6 | Luigi Taramazzo | 2
row 3 : Ken Kavanagh | Maserati | 250F | Maserati 250F1 2.5 L6 | Ken Kavanagh | 2, 5
row 4 : Jo Bonnier | Maserati | 250F | Maserati 250F1 2.5 L6 | Harry Schell | 1
row 5 : Jo Bonnier | Maserati | 250F | Maserati 250F1 2.5 L6 | Jo Bonnier | 2–3, 5, 7, 9
row 6 : Jo Bonnier | Maserati | 250F | Maserati 250F1 2.5 L6 | Phil Hill | 6
row 7 : Jo Bonnier | Maserati | 250F | Maserati 250F1 2.5 L6 | Giulio Cabianca | 10
row 8 : Jo Bonnier | Maserati | 250F | Maserati 250F1 2.5 L6 | Hans Herrmann | 10–11
row 9 : Francesco Godia Sales | Maserati | 250F | Maserati 250F1 2.5 L6 | Paco Godia | 1–2, 5–6
row 10 : H.H. Gould | Maserati | 250F | Maserati 250F1 2.5 L6 | Horace Gould | 1–3
row 11 : H.H. Gould | Maserati | 250F | Maserati 250F1 2.5 L6 | Masten Gregory | 3
row 12 : R.R.C. Walker Racing Team | Cooper - Climax | T43 T45 | Climax FPF 2.0 L4 | Stirling Moss | 1
row 13 : R.R.C. Walker Racing Team | Cooper - Climax | T43 T45 | Climax FPF 2.0 L4 | Maurice Trintignant | 2–3, 7–11
row 14 : R.R.C. Walker Racing Team | Cooper - Climax | T43 T45 | Climax FPF 2.0 L4 | Ron Flockhart | 2
row 15 : R.R.C. Walker Racing Team | Cooper - Climax | T43 | Climax FPF 1.5 L4 | François Picard | 11
row 16 : Scuderia Ferrari | Ferrari | 246 | Ferrari 143 2.4 V6 | Luigi Musso | 1–3, 5–6
row 17 : Scuderia Ferrari | Ferrari | 246 | Ferrari 143 2.4 V6 | Peter Collins | 1–3, 5–8
row 18 : Scuderia Ferrari | Ferrari | 246 | Ferrari 143 2.4 V6 | Wolfgang von Trips | 2, 6–10
row 19 : Scuderia Ferrari | Ferrari | 246 | Ferrari 143 2.4 V6 | Phil Hill | 10–11
row 20 : Scuderia Ferrari | Ferrari | 156 | Ferrari D156 1.5 V6 | Phil Hill | 8
row 21 : Owen Racing Organisation | BRM | P25 | BRM P25 2.5 L4 | Jean Behra | 2–3, 5–11
row 22 : Owen Racing Organisation | BRM | P25 | BRM P25 2.5 L4 | Harry Schell | 2–3, 5–11
row 23 : Owen Racing Organisation | BRM | P25 | BRM P25 2.5 L4 | Maurice Trintignant | 6
row 24 : Owen Racing Organisation | BRM | P25 | BRM P25 2.5 L4 | Jo Bonnier | 10–11
row 25 : Owen Racing Organisation | BRM | P25 | BRM P25 2.5 L4 | Ron Flockhart | 11
row 26 : Bernie C. Ecclestone | Connaught - Alta | B | Alta GP 2.5 L4 | Bernie Ecclestone | 2
row 27 : Bernie C. Ecclestone | Connaught - Alta | B | Alta GP 2.5 L4 | Paul Emery | 2
row 28 : Bernie C. Ecclestone | Connaught - Alta | B | Alta GP 2.5 L4 | Jack Fairman | 7
row 29 : Bernie C. Ecclestone | Connaught - Alta | B | Alta GP 2.5 L4 | Ivor Bueb | 7
row 30 : Cooper Car Company | Cooper - Climax | T45 T44 | Climax FPF 2.0 L4 | Jack Brabham | 2–3, 5–7, 9–10
row 31 : Cooper Car Company | Cooper - Climax | T45 T44 | Climax FPF 2.0 L4 | Roy Salvadori | 2–3, 5–11
row 32 : Cooper Car Company | Cooper - Climax | T45 T44 | Climax FPF 2.0 L4 | Ian Burgess | 7
row 33 : Cooper Car Company | Cooper - Climax | T45 T44 | Climax FPF 2.0 L4 | Jack Fairman | 11
row 34 : Team Lotus | Lotus - Climax | 12 16 | Climax FPF 2.0 L4 Cli | Alan Stacey | 7
row 35 : Team Lotus | Lotus - Climax | 16 | Climax FPF 1.5 L4 | Graham Hill | 8
row 36 : Vandervell Products | Vanwall | VW 5 | Vanwall 254 2.5 L4 | Tony Brooks | 2–3, 5–11
row 37 : Vandervell Products | Vanwall | VW 5 | Vanwall 254 2.5 L4 | Stuart Lewis-Evans | 2–3, 5–7, 9–11
row 38 : Maria Teresa de Filippis | Maserati | 250F | Maserati 250F1 2.5 L6 | Maria Teresa de Filippis | 2, 5, 10
row 39 : Giorgio Scarlatti | Maserati | 250F | Maserati 250F1 2.5 L6 | Giorgio Scarlatti | 2–3
row 40 : Giorgio Scarlatti | Maserati | 250F | Maserati 250F1 2.5 L6 | Jo Bonnier | 6
row 41 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Gerino Gerini | 2, 6–7, 10–11
row 42 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Maurice Trintignant | 5
row 43 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Masten Gregory | 5
row 44 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Wolfgang Seidel | 5, 11
row 45 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Carroll Shelby | 6–7, 10
row 46 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Jo Bonnier | 8
row 47 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Hans Herrmann | 8
row 48 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Cliff Allison | 9
row 49 : Scuderia Centro Sud | Maserati | 250F | Maserati 250F1 2.5 L6 | Maria Teresa de Filippis | 9
row 50 : Scuderia Centro Sud | Cooper - Climax | T43 | Climax FPF 1.5 L4 | Wolfgang Seidel | 8
row 51 : OSCA Automobili | OSCA | F2 | OSCA 372 1.5 L4 | Luigi Piotti | 2
row 52 : André Testut | Maserati | 250F | Maserati 250F1 2.5 L6 | André Testut | 2
row 53 : Ecurie Maarsbergen | Porsche | RSK | Porsche 547/3 1.5 F4 | Carel Godin de Beaufort | 3
row 54 : Ecurie Maarsbergen | Porsche | RS550 | Porsche 547/3 1.5 F4 | Carel Godin de Beaufort | 8
row 55 : Juan Manuel Fangio | Maserati | 250F | Maserati 250F1 2.5 L6 | Juan Manuel Fangio | 6
row 56 : Dick Gibson | Cooper - Climax | T43 | Climax FPF 1.5 L4 | Dick Gibson | 8
row 57 : Dr Ing F. Porsche KG | Porsche | RSK | Porsche 547/3 1.5 F4 | Edgar Barth | 8
row 58 : High Efficiency Motors | Cooper - Climax | T43 | Climax FPF 1.5 L4 | Ian Burgess | 8 [/Table] Answer this question based on the above table: What was the constructor for jo bonnier of 6 rounds?

Answer: Maserati