Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_33865 ( "Frequency" real, "Callsign" text, "Brand" text, "City of License" text, "Website" text, "Webcast" text )

### Question ###
Which Frequency has a Website of , and a Webcast of in san antonio?

### Accurate SQL ###

SELECT AVG("Frequency") FROM table_33865 WHERE "Website" = '•' AND "Webcast" = '•' AND "City of License" = 'san antonio'