CREATE TABLE table_name_79 (evening_gown VARCHAR, preliminaries VARCHAR, state VARCHAR)

What is the evening gown score of the contestant from the District of Columbia with preliminaries smaller than 8.647?
SELECT COUNT(evening_gown) FROM table_name_79 WHERE preliminaries < 8.647 AND state = "district of columbia"
SELECT COUNT("evening_gown") FROM "table_name_79" WHERE "district of columbia" = "state" AND "preliminaries" < 8.647