Table: manager_changes_2bl
Columns: team
outgoing_manager
manner_of_departure
date_of_vacancy
replaced_by
date_of_appointment
position_in_table

Question: What is the vacancy date for the manager appointed on 2 November 2009 who left due to mutual consent?
SQL: SELECT "date_of_vacancy" FROM manager_changes_2bl WHERE "manner_of_departure" = 'mutual consent' AND "date_of_appointment" = '2 november 2009'

Question: What was the manner of departure for the vacancy date of 20 September 2009?
SQL: SELECT "manner_of_departure" FROM manager_changes_2bl WHERE "date_of_vacancy" = '20 september 2009'

Question: What was the vacancy date of the manager appointed on 11 March 2010?
SQL: SELECT "date_of_vacancy" FROM manager_changes_2bl WHERE "date_of_appointment" = '11 march 2010'