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_12 (samples_taken INTEGER, melamine_content_mg_kg_ VARCHAR, producer VARCHAR)
### Question:
How many samples taken from producer Qingdao Suncare Nutritional Technology with a melamine content less than 53.4?
### Answer:
SELECT SUM(samples_taken) FROM table_name_12 WHERE melamine_content_mg_kg_ < 53.4 AND producer = "qingdao suncare nutritional technology"