Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Which Frequency has a Website of •, and a Webcast of •in san antonio?

### Inputs:
table_name: table, columns: ['Frequency', 'Callsign', 'Brand', 'City of License', 'Website', 'Webcast']

### Response:
SELECT AVG Frequency FROM table WHERE Website = • AND Webcast = • AND City of License = san antonio