Table: manager_changes_4
Columns: team
outgoing_manager
manner_of_departure
date_of_vacancy
replaced_by
date_of_appointment
position_in_table

Question: Name the total number of outgoing manager for villarreal b
SQL: SELECT COUNT("outgoing_manager") FROM manager_changes_4 WHERE "team" = 'Villarreal B'

Question: Name the date of appointment for 26 may 2011
SQL: SELECT COUNT("date_of_appointment") FROM manager_changes_4 WHERE "date_of_vacancy" = '26 May 2011'

Question: Name the outgoing manager for esteban vigo
SQL: SELECT COUNT("outgoing_manager") FROM manager_changes_4 WHERE "replaced_by" = 'Esteban Vigo'

Question: Name the number of team for 19th position
SQL: SELECT COUNT("team") FROM manager_changes_4 WHERE "position_in_table" = '19th'

Question: Name the manner of departure for luis enrique
SQL: SELECT "manner_of_departure" FROM manager_changes_4 WHERE "outgoing_manager" = 'Luis Enrique'