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"
What are the names of workshop groups in which services with product name "film" are performed?
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 ''
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 = value
What are the names of workshop groups in which services with product name `` film '' are performed ?