Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_40 (erp_w INTEGER, call_sign VARCHAR)
### Question:
How many ERP W is it that has a Call sign of w273bs?
### Answer:
SELECT SUM(erp_w) FROM table_name_40 WHERE call_sign = "w273bs"