How many documents are with document type code BK for each product id?
CREATE TABLE Documents (
    project_id VARCHAR,
    document_type_code VARCHAR
)
SELECT COUNT(*), project_id FROM Documents WHERE document_type_code = "BK" GROUP BY project_id
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many documents are with document type code BK for each product id? ### Input: CREATE TABLE Documents (
    project_id VARCHAR,
    document_type_code VARCHAR
) ### Response: SELECT COUNT(*), project_id FROM Documents WHERE document_type_code = "BK" GROUP BY project_id