Question: When 9 is the rank who are the couple?
SQL: SELECT "Couple" FROM "1-19744915-18" WHERE "Rank" = 9.0;

Question: When Roxanne and Daniel are the couple what is the highest rank?
SQL: SELECT MAX("Rank") FROM "1-19744915-18" WHERE "Couple" = 'Roxanne and Daniel';

Question: When Ellery and Frankie are the couple what is the highest total?
SQL: SELECT MAX("Total") FROM "1-19744915-18" WHERE "Couple" = 'Ellery and Frankie';

Question: When 8 is the public what are the results?
SQL: SELECT "Result" FROM "1-19744915-18" WHERE "Public" = 8.0;

Question: When 8 is the public and the result is Safe what is the highest rank?
SQL: SELECT MAX("Rank") FROM "1-19744915-18" WHERE "Result" = 'Safe' AND "Public" = 8.0;