Table:
text: 1993 Japanese Grand Prix
Race
Race
Driver Constructor_ Laps Time_Retired Grid
Ayrton Senna McLaren - Ford 53 1:40:27.912 2
Alain Prost Williams - Renault 53 +11.435 1
Mika Häkkinen McLaren - Ford 53 +26.129 3
Damon Hill Williams - Renault 53 +1:23.538 6
Rubens Barrichello Jordan - Hart 53 +1:35.101 12
Eddie Irvine Jordan - Hart 53 +1:46.421 8
Mark Blundell Ligier - Renault 52 +1 Lap 17
JJ Lehto Sauber 52 +1 Lap 11
Martin Brundle Ligier - Renault 51 +2 Laps 15
Pierluigi Martini Minardi - Ford 51 +2 Laps 22
Johnny Herbert Lotus - Ford 51 +2 Laps 19
Toshio Suzuki Larrousse - Lamborghini 51 +2 Laps 23

Question: What is the lowest starting grid for jj lehto with over 51 laps for the 1993 Japanese Grand Prix?

Question: What is the average starting grid at the 1993 Japanese Grand Prix with a time/retirement of +2 laps and less than 51 laps?