user: Question: Which Frequency has a Website of •, and a Webcast of •in San Antonio?
Columns: ['Frequency', 'Callsign', 'Brand', 'City of License', 'Website', 'Webcast']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [680.0, 'KKYX', 'Country Legends 680', 'San Antonio', 'kkyx.com', 'listen live']
SQL:

assistant: SELECT "Frequency" FROM "Table" WHERE "Website" = '•' AND "Webcast" = '•' AND "City of License" = 'San Antonio';