Table: dwts_season4_scores
Columns: dance
best_dancer
best_score
worst_dancer
worst_score

Question: What dance was Leeza Gibbons the worst dancer for, receiving a score lower than 15?
SQL: SELECT MIN("best_score") FROM dwts_season4_scores WHERE "worst_dancer" = 'leeza gibbons' AND "worst_score" < 15

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 dwts_season4_scores WHERE "best_dancer" = 'apolo anton ohno' AND "best_score" > 30