Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_28164986_4 (date_of_vacancy VARCHAR, outgoing_manager VARCHAR)
### Question:
how many times did tunde abdulrahman leave the team?
### Answer:
SELECT COUNT(date_of_vacancy) FROM table_28164986_4 WHERE outgoing_manager = "Tunde Abdulrahman"