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_57408 ( "Crew" real, "Year 10 1st Quad" text, "Year 10 2nd Quad" text, "Year 10 3rd Quad" text, "Year 10 4th Quad" text, "Year 10 Single Scull" text, "Year 9 1st Quad" text, "Year 9 2nd Quad" text, "Year 9 3rd Quad" text, "Year 9 4th Quad" text, "Year 9 Single Scull" text, "Year 8 1st Quad" text, "Year 8 2nd Quad" text, "Year 8 3rd Quad" text, "Year 8 4th Quad" text, "Year 8 Single Scull" text )

### Question ###
In the Crews beyond 2006 what was the Year 8 1st Quads that exists in the same row that had the year 9 2nd Quads of BGGS?

### Accurate SQL ###

SELECT "Year 8 1st Quad" FROM table_57408 WHERE "Year 9 2nd Quad" = 'bggs' AND "Crew" > '2006'