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_12 (date VARCHAR, opponenent VARCHAR, match_type VARCHAR)
### Question:
When was the opponent Poland and the match type EC -qualifier?
### Answer:
SELECT date FROM table_name_12 WHERE opponenent = "poland" AND match_type = "ec -qualifier"