What races have n/a Points, 0 Wins, and 6th Position entries?
CREATE TABLE "career_summary" (
  "season" real,
  "series" text,
  "team" text,
  "races" text,
  "wins" text,
  "poles" text,
  "f_laps" text,
  "podiums" text,
  "points" text,
  "position" text
);
SELECT "races" FROM "career_summary" WHERE "points"='n/a' AND "wins"='0' AND "position"='6th';