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_79 (birth VARCHAR, became_queen VARCHAR)
### Question:
When was the person who became queen on 15 April 1820 born?
### Answer:
SELECT birth FROM table_name_79 WHERE became_queen = "15 april 1820"