What is the class for the ERP W of 500?
CREATE TABLE table_name_12 (class VARCHAR, erp_w VARCHAR)
SELECT class FROM table_name_12 WHERE erp_w = 500
### Context: CREATE TABLE table_name_12 (class VARCHAR, erp_w VARCHAR) ### Question: What is the class for the ERP W of 500? ### Answer: SELECT class FROM table_name_12 WHERE erp_w = 500