Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_11829 ( "State" text, "Preliminaries" real, "Interview" real, "Swimsuit" real, "Evening Gown" real, "Average" real )

### Question ###
What is the evening gown score of the contestant from the District of Columbia with preliminaries smaller than 8.647?

### Accurate SQL ###

SELECT COUNT("Evening Gown") FROM table_11829 WHERE "Preliminaries" < '8.647' AND "State" = 'district of columbia'