user: ### NOW ANSWER:
Question: Tell me the sum of number of jamaicans given british citizenship for 2004 and registration of a minor child more than 640
Columns: ['Year', 'Numer of Jamaicans granted British citizenship', 'Naturalisation by residence', 'Naturalisation by marriage', 'Registration of a minor child', 'Registration by other means']
Types: ['real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1997.0, 732.0, 327.0, 279.0, 114.0, 12.0]
SQL:

assistant: SELECT SUM("Numer of Jamaicans granted British citizenship") FROM "Table" WHERE "Year" = 2004.0 AND "Registration of a minor child" > 640.0;