Table:
text: 2008 Grand Prix motorcycle racing season
Grands Prix
Grands Prix
Round Date_ Grand_Prix Circuit _125cc_winner _250cc_winner MotoGP_winner Report
14 14 September Indianapolis Grand Prix Indianapolis Nicolás Terol Race cancelled Valentino Rossi Report
15 28 September Japanese Grand Prix Motegi Stefan Bradl Marco Simoncelli Valentino Rossi Report
16 5 October Australian Grand Prix Phillip Island Mike di Meglio Marco Simoncelli Casey Stoner Report
17 19 October Malaysian Grand Prix Sepang Gábor Talmácsi Álvaro Bautista Valentino Rossi Report
18 26 October Valencian Grand Prix Valencia Simone Corsi Marco Simoncelli Casey Stoner Report

Question: Name the circuit among the 2008 Grand Prix motorcycle races, lap 18?