CREATE TABLE table_429 ("State" TEXT, "Preliminaries" TEXT, "Interview" TEXT, "Swimsuit" TEXT, "Evening Gown" TEXT, "Average" TEXT)

How many times did district of Columbia receive a score for evening gown?
SELECT COUNT("Evening Gown") FROM table_429 WHERE "State" = 'District of Columbia'
SELECT COUNT("Evening Gown") FROM "table_429" WHERE "State" = 'District of Columbia'