What is the smallest cultural and educational panel with a nominated by the Taoiseach less than 5 and the total greater than 19?
CREATE TABLE "composition_of_the_17th_seanad" (
  "administrative_panel" real,
  "agricultural_panel" real,
  "cultural_and_educational_panel" real,
  "industrial_and_commercial_panel" real,
  "labour_panel" real,
  "national_university_of_ireland" real,
  "university_of_dublin" real,
  "nominated_by_the_taoiseach" real,
  "total" real
);
SELECT MIN("cultural_and_educational_panel") FROM "composition_of_the_17th_seanad" WHERE "nominated_by_the_taoiseach"<5 AND "total">19;