SELECT T1.Service_Type_Description FROM Ref_Service_Types AS T1 JOIN Services AS T2 ON T1.Service_Type_Code  =  T2.Service_Type_Code WHERE T2.Product_Name  =  'photo' INTERSECT SELECT T1.Service_Type_Description FROM Ref_Service_Types AS T1 JOIN Services AS T2 ON T1.Service_Type_Code  =  T2.Service_Type_Code WHERE T2.Product_Name  =  'film'
What is the description of the service type which offers both the photo product and the film product?
SELECT T1.Service_Type_Description FROM Ref_Service_Types AS T1 JOIN Services AS T2 ON T1.Service_Type_Code = T2.Service_Type_Code WHERE T2.Product_Name = 'photo ' INTERSECT SELECT T1.Service_Type_Description FROM Ref_Service_Types AS T1 JOIN Services AS T2 ON T1.Service_Type_Code = T2.Service_Type_Code WHERE T2.Product_Name = 'film '
select t1 . service_type_description from ref_service_types as t1 join services as t2 on t1 . service_type_code = t2 . service_type_code where t2 . product_name = value intersect select t1 . service_type_description from ref_service_types as t1 join services as t2 on t1 . service_type_code = t2 . service_type_code where t2 . product_name = value
What is the description of the service type which offers both the photo product and the film product ?