CREATE TABLE "achievements" (
  "year" real,
  "competition" text,
  "venue" text,
  "position" text,
  "notes" text
);

Question: Name the lowest year for 12th position
SQL: SELECT MIN("year") FROM "achievements" WHERE "position"='12th';

Question: Tell me the competition for half marathon
SQL: SELECT "competition" FROM "achievements" WHERE "notes"='half marathon';