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_name_27 (country VARCHAR, series_premiere VARCHAR, tv_network_s_ VARCHAR)
### Question:
What country has a series premier of unknown and mbc action as their TV network?
### Answer:
SELECT country FROM table_name_27 WHERE series_premiere = "unknown" AND tv_network_s_ = "mbc action"