What's the general classification of stage 3 with David Loosli as the mountains classification?
CREATE TABLE "jersey_progress" (
  "stage" text,
  "winner" text,
  "general_classification" text,
  "mountains_classification" text,
  "points_classification" text,
  "sprints_classification" text,
  "team_classification" text
);
SELECT "general_classification" FROM "jersey_progress" WHERE "mountains_classification"='david loosli' AND "stage"='3';