user: Question: Which venue did the African Championships have after 2006 with a position of 2nd and 3000 m s'chase in notes?
Columns: ['Year', 'Competition', 'Venue', 'Position', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2001.0, 'African Junior Championships', 'Réduit , Mauritius', '1st', "3000 m s'chase"]
SQL:

assistant: SELECT "Venue" FROM "Table" WHERE "Year" > 2006.0 AND "Notes" = '3000 m s''chase' AND "Position" = '2nd' AND "Competition" = 'African Championships';