Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_44 ( numer_of_jamaicans_granted_british_citizenship INTEGER, year VARCHAR, registration_of_a_minor_child VARCHAR )

### Question ###
Tell me the sum of number of jamaicans given british citizenship for 2004 and registration of a minor child more than 640

### Accurate SQL ###

SELECT SUM(numer_of_jamaicans_granted_british_citizenship) FROM table_name_44 WHERE year = 2004 AND registration_of_a_minor_child > 640