CREATE TABLE table_name_2 (date_of_vacancy VARCHAR2, outgoing_manager VARCHAR2)

What was the date of vacancy after the outgoing manager, ralf santelli departed?
SELECT date_of_vacancy FROM table_name_2 WHERE outgoing_manager = "ralf santelli"
SELECT "date_of_vacancy" FROM "table_name_2" WHERE "outgoing_manager" = "ralf santelli"