What was the number of draws when the Elche CF club played 38 and had a goal difference of -16?
CREATE TABLE "final_table" (
  "position" real,
  "club" text,
  "played" real,
  "points" text,
  "wins" real,
  "draws" real,
  "losses" real,
  "goals_for" real,
  "goals_against" real,
  "goal_difference" real
);
SELECT MIN("draws") FROM "final_table" WHERE "goal_difference">-16 AND "club"='elche cf' AND "played">38;