What is the lowest of the Highest score for the Quickstep Dance and the Lowest score under 16?
CREATE TABLE "highest_and_lowest_scoring_performances" (
  "dance" text,
  "best_dancer_s" text,
  "highest_score" real,
  "worst_dancer_s" text,
  "lowest_score" real
);
SELECT MIN("highest_score") FROM "highest_and_lowest_scoring_performances" WHERE "dance"='quickstep' AND "lowest_score"<16;