Show all document names using templates with template type code BK.
SELECT T2.document_name FROM Templates AS T1 JOIN Documents AS T2 ON T1.template_id  =  T2.template_id WHERE T1.template_type_code  =  "BK"
SELECT T2.document_name FROM Templates AS T1 JOIN Documents AS T2 ON T1.template_id  =  T2.template_id WHERE T1.template_type_code  =  "BK"
[{'Document_Name': 'Robbin CV'}, {'Document_Name': 'Data base'}, {'Document_Name': 'How to read a book'}, {'Document_Name': 'Palm reading'}, {'Document_Name': 'About Korea'}]