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_77 (became_duchess VARCHAR, name VARCHAR)
### Question:
When did eleonor magdalene of the palatinate-neuburg become duchess?
### Answer:
SELECT became_duchess FROM table_name_77 WHERE name = "eleonor magdalene of the palatinate-neuburg"