When was the person who became queen on 15 April 1820 born?
CREATE TABLE table_name_79 (birth VARCHAR, became_queen VARCHAR)
SELECT birth FROM table_name_79 WHERE became_queen = "15 april 1820"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_79 (birth VARCHAR, became_queen VARCHAR) Question: When was the person who became queen on 15 April 1820 born? [/INST] SELECT birth FROM table_name_79 WHERE became_queen = "15 april 1820" </s>