Table:
text: 1998 Monaco Grand Prix
Race
Race
Driver Constructor_ Laps Time_Retired Grid
Jarno Trulli Prost - Peugeot 56 Gearbox 10
Olivier Panis Prost - Peugeot 49 Wheel 18
Ralf Schumacher Jordan - Mugen-Honda 44 Suspension 16
Alexander Wurz Benetton - Playlife 42 Spun off 6
Jan Magnussen Stewart - Ford 30 Suspension 17
David Coulthard McLaren - Mercedes 17 Engine 2
Rubens Barrichello Stewart - Ford 11 Suspension 14
Heinz-Harald Frentzen Williams - Mecachrome 9 Collision 5
Esteban Tuero Minardi - Ford 0 Spun off 21
Riccardo Rosset Tyrrell - Ford 0 Did Not Qualify DNQ

Question: Which driver had a starting number of 18 in the 1998 Monaco Grand Prix?