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 Services ( Workshop_Group_ID VARCHAR, Product_Name VARCHAR )
TABLE: CREATE TABLE Drama_Workshop_Groups ( Store_Phone VARCHAR, Store_Email_Address VARCHAR, Workshop_Group_ID VARCHAR )

### Question ###
What are the names of workshop groups in which services with product name 'film' are performed?

### Accurate 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"