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_20449 ( "Country" text, "Name" text, "Host" text, "Channel" text, "First Premiere" text, "Regular Judge" text, "Seasons" real )

### Question ###
Name the host when first premiere is august 3, 2007

### Accurate SQL ###

SELECT "Host" FROM table_20449 WHERE "First Premiere" = 'August 3, 2007'