CREATE TABLE "classification" (
  "driver" text,
  "constructor" text,
  "laps" real,
  "time_retired" text,
  "grid" real
);

Question: What is the Time/Retired when the grid is larger than 9 and Rolf Stommelen is the driver?
SQL: SELECT "time_retired" FROM "classification" WHERE "grid">9 AND "driver"='rolf stommelen';

Question: What is the highest number of laps when the Time/Retired is differential?
SQL: SELECT MAX("laps") FROM "classification" WHERE "time_retired"='differential';

Question: Who is the driver when the laps are smaller than 14, the grid is smaller than 16, and the Time/retired is not classified?
SQL: SELECT "driver" FROM "classification" WHERE "laps"<14 AND "grid"<16 AND "time_retired"='not classified';

Question: What is the average grid when the laps are smaller than 14 and Reine Wisell is the driver?
SQL: SELECT AVG("grid") FROM "classification" WHERE "laps"<14 AND "driver"='reine wisell';