Table: serie_a_managers_2011
Columns: team
outgoing_manager
manner_of_departure
date_of_vacancy
position_in_table
replaced_by
date_of_appointment

Question: What team hired Renato Gaúcho?
SQL: SELECT "team" FROM serie_a_managers_2011 WHERE "replaced_by" = 'Renato Gaúcho'

Question: How many times did Silas leave as a team manager?
SQL: SELECT COUNT("manner_of_departure") FROM serie_a_managers_2011 WHERE "outgoing_manager" = 'Silas'

Question: Why did Geninho leave as manager?
SQL: SELECT "manner_of_departure" FROM serie_a_managers_2011 WHERE "outgoing_manager" = 'Geninho'

Question: Who was the new Santos manager?
SQL: SELECT "replaced_by" FROM serie_a_managers_2011 WHERE "team" = 'Santos'

Question: Who was replaced as manager on June 20?
SQL: SELECT "outgoing_manager" FROM serie_a_managers_2011 WHERE "date_of_appointment" = 'June 20'