question: What was the highest rank by average of a couple who had an average of 25.3 and had more than 10 dances?
answer: SELECT MAX(rank_by_average) FROM table_name_27 WHERE average = 25.3 AND number_of_dances > 10
context: CREATE TABLE table_name_27 (rank_by_average INTEGER, average VARCHAR, number_of_dances VARCHAR)