CREATE TABLE "classification_leadership_by_stage" (
  "stage" text,
  "winner" text,
  "general_classification" text,
  "points_classification" text,
  "mountains_classification" text,
  "young_rider_classification" text,
  "trofeo_fast_team" text
);

Question: Name the general classification of stage 15
SQL: SELECT COUNT("general_classification") FROM "classification_leadership_by_stage" WHERE "stage"='15';

Question: Name the trofeo fast team of stage 2
SQL: SELECT "trofeo_fast_team" FROM "classification_leadership_by_stage" WHERE "stage"='2';

Question: Name the young rider classification with laudelino cubino
SQL: SELECT "young_rider_classification" FROM "classification_leadership_by_stage" WHERE "winner"='Laudelino Cubino';

Question: Name the total number of trofeo fast team of stage 16
SQL: SELECT COUNT("trofeo_fast_team") FROM "classification_leadership_by_stage" WHERE "stage"='16';