What days are vacant that were replaced by john brown?
CREATE TABLE table_11207040_6 (date_of_vacancy VARCHAR, replaced_by VARCHAR)
SELECT date_of_vacancy FROM table_11207040_6 WHERE replaced_by = "John Brown"
### Context: CREATE TABLE table_11207040_6 (date_of_vacancy VARCHAR, replaced_by VARCHAR) ### Question: What days are vacant that were replaced by john brown? ### Answer: SELECT date_of_vacancy FROM table_11207040_6 WHERE replaced_by = "John Brown"