Who held the pole position in SPA-Francorchamps?
CREATE TABLE "season_review" (
  "race" text,
  "date" text,
  "location" text,
  "pole_position" text,
  "fastest_lap" text,
  "race_winner" text,
  "constructor" text,
  "report" text
);
SELECT "pole_position" FROM "season_review" WHERE "location"='spa-francorchamps';