Question: Who constructed the car that has a Time/Retired of Engine, and over 50 laps?
SQL: SELECT "Constructor" FROM "2-1122486-1" WHERE "Time/Retired" = 'Engine' AND "Laps" > 50.0;

Question: What is the time/retired for Ronnie Peterson with under 75 laps and a grid under 15?
SQL: SELECT "Time/Retired" FROM "2-1122486-1" WHERE "Laps" < 75.0 AND "Grid" < 15.0 AND "Driver" = 'Ronnie Peterson';