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

What is the project detail for the project with document 'King Book'?
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"
SELECT "T1"."project_details" FROM "Projects" AS "T1" JOIN "Documents" AS "T2" ON "King Book" = "T2"."document_name" AND "T1"."project_id" = "T2"."project_id"