Which Winner has a Trofeo Fast Team of metauro mobili-pinarello, and a General classification of giuseppe saronni?
CREATE TABLE "classification_leadership_by_stage" (
  "stage" text,
  "winner" text,
  "general_classification" text,
  "points_classification" text,
  "trofeo_fast_team" text
);
SELECT "winner" FROM "classification_leadership_by_stage" WHERE "trofeo_fast_team"='metauro mobili-pinarello' AND "general_classification"='giuseppe saronni';