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_9 (date VARCHAR, opponents VARCHAR, score VARCHAR)
### Question:
When was Göteborg the opponent with a score of 3-1?
### Answer:
SELECT date FROM table_name_9 WHERE opponents = "göteborg" AND score = "3-1"