Table:
text: 1986 Portuguese Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Nigel Mansell Williams - Honda 70 1:37:21.900 2
Alain Prost McLaren - TAG 70 + 18.772 3
Nelson Piquet Williams - Honda 70 + 49.274 6
Ayrton Senna Lotus - Renault 69 Out of Fuel 1
Michele Alboreto Ferrari 69 + 1 Lap 13
Stefan Johansson Ferrari 69 + 1 Lap 8
René Arnoux Ligier - Renault 69 + 1 Lap 10
Teo Fabi Benetton - BMW 68 + 2 Laps 5
Johnny Dumfries Lotus - Renault 68 + 2 Laps 15
Thierry Boutsen Arrows - BMW 67 + 3 Laps 21

Question: What grid has a driver owned by Johnny Dumfries in the 1986 Portuguese Grand Prix?