Table:
text: 1986 Canadian Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Philippe Streiff Tyrrell - Renault 65 + 4 Laps 17
Huub Rothengatter Zakspeed 63 + 6 Laps 24
Riccardo Patrese Brabham - BMW 44 Turbo 9
Piercarlo Ghinzani Osella - Alfa Romeo 43 Gearbox 23
Andrea de Cesaris Minardi - Motori Moderni 40 Gearbox 21
Thierry Boutsen Arrows - BMW 38 Electrical 12
Gerhard Berger Benetton - BMW 34 Turbo 7
Stefan Johansson Ferrari 29 Accident 18
Johnny Dumfries Lotus - Renault 28 Accident 16
Jonathan Palmer Zakspeed 24 Engine 22
Derek Warwick Brabham - BMW 20 Engine 10
Alessandro Nannini Minardi - Motori Moderni 17 Turbo 20
Teo Fabi Benetton - BMW 13 Battery 15

text: 1986 Canadian Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Nigel Mansell Williams - Honda 69 1:42:26.415 1
Alain Prost McLaren - TAG 69 + 20.659 4
Nelson Piquet Williams - Honda 69 + 36.262 3
Keke Rosberg McLaren - TAG 69 + 1:35.673 6
Ayrton Senna Lotus - Renault 68 + 1 Lap 2
René Arnoux Ligier - Renault 68 + 1 Lap 5
Jacques Laffite Ligier - Renault 68 + 1 Lap 8
Michele Alboreto Ferrari 68 + 1 Lap 11
Martin Brundle Tyrrell - Renault 67 + 2 Laps 19
Alan Jones Lola - Ford 66 + 3 Laps 13

Question: What is the average laps for a grid greater than 2 for a Ferrari involved in an accident at the 1986 Canadian Grand Prix?