What is the Name of the private Castle of the 16th century which is occupied?
CREATE TABLE "midlothian" (
  "name" text,
  "type" text,
  "date" text,
  "condition" text,
  "ownership" text
);
SELECT "name" FROM "midlothian" WHERE "ownership"='private' AND "condition"='occupied' AND "date"='16th century';