CREATE TABLE "stage_results" (
  "stage" text,
  "date" text,
  "route" text,
  "terrain" text,
  "length" text,
  "winner" text
);

Question: Which route has a Date of 2 july?
SQL: SELECT "route" FROM "stage_results" WHERE "date"='2 july';

Question: Which length has a Stage of 9?
SQL: SELECT "length" FROM "stage_results" WHERE "stage"='9';

Question: Which date has a Terrain of plain stage, and a Stage of 4?
SQL: SELECT "date" FROM "stage_results" WHERE "terrain"='plain stage' AND "stage"='4';