CREATE TABLE Services (Workshop_Group_ID VARCHAR(255), Product_Name VARCHAR(255)); CREATE TABLE Drama_Workshop_Groups (Store_Phone VARCHAR(255), Store_Email_Address VARCHAR(255), Workshop_Group_ID VARCHAR(255))
What are the names of workshop groups in which services with product name "film" are performed?
    
SQL: SELECT T1.Store_Phone, T1.Store_Email_Address FROM Drama_Workshop_Groups AS T1 JOIN Services AS T2 ON T1.Workshop_Group_ID = T2.Workshop_Group_ID WHERE T2.Product_Name = "film"