Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_28 (venue VARCHAR, competition VARCHAR, position VARCHAR, year VARCHAR, notes VARCHAR)
### Question:
Which venue did the African Championships have after 2006 with a position of 2nd and 3000 m s'chase in notes?
### Answer:
SELECT venue FROM table_name_28 WHERE year > 2006 AND notes = "3000 m s'chase" AND position = "2nd" AND competition = "african championships"