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 Projects ( project_details VARCHAR, project_id VARCHAR )
TABLE: CREATE TABLE Documents ( project_id VARCHAR, document_name VARCHAR )

### Question ###
What is the project detail for the project with document 'King Book'?

### Accurate SQL ###

SELECT T1.project_details FROM Projects AS T1 JOIN Documents AS T2 ON T1.project_id = T2.project_id WHERE T2.document_name = "King Book"