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_58 (erp_w INTEGER, frequency_mhz VARCHAR)
### Question:
Which ERP W is the lowest one that has a Frequency MHz of 91.3?
### Answer:
SELECT MIN(erp_w) FROM table_name_58 WHERE frequency_mhz = 91.3