What is the total number of Second, when First is greater than 18, when Season is 1992-93, and when Premier is greater than 16?
CREATE TABLE "number_of_participants" (
  "season" text,
  "premier" real,
  "first" real,
  "second" real,
  "total" real
);
SELECT COUNT("second") FROM "number_of_participants" WHERE "first">18 AND "season"='1992-93' AND "premier">16;