Table:
text: 2001 Malaysian Grand Prix
Race
Race
Driver Constructor_ Laps Time_Retired Grid
Fernando Alonso Minardi - European 52 +3 Laps 21
Tarso Marques Minardi - European 51 +4 Laps 20
Giancarlo Fisichella Benetton - Renault 31 Fuel Pressure 16
Jacques Villeneuve BAR - Honda 3 Spun off 7
Nick Heidfeld Sauber - Petronas 3 Spun off 11
Enrique Bernoldi Arrows - Asiatech 3 Spun off 22
Juan Pablo Montoya Williams - BMW 3 Spun off 6
Eddie Irvine Jaguar - Cosworth 3 Water Leak 12
Olivier Panis BAR - Honda 1 Oil Leak 10
Kimi Räikkönen Sauber - Petronas 0 Driveshaft 14

Question: What is the average number of laps where the time/retirement was a water leak and the 2001 Malaysian Grand Prix car number was greater than 12?

Question: What is the average number of laps when timed/retired and the driver was Nick Heidfeld in the 2001 Malaysian Grand Prix?