Question: What dance was leeza gibbons the worst dancer for, receiving a score lower than 15?
SQL: SELECT MIN("Best score") FROM "2-10535584-5" WHERE "Worst dancer" = 'leeza gibbons' AND "Worst score" < 15.0;

Question: What is the worst score for the dance that has apolo anton ohno as the best dancer, and where his best score is larger than 30?
SQL: SELECT SUM("Worst score") FROM "2-10535584-5" WHERE "Best dancer" = 'apolo anton ohno' AND "Best score" > 30.0;