user: Question: How many locations have the call signs DXJP-FM? 
Columns: ['Branding', 'Callsign', 'Frequency', 'Power (kW)', 'Location']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ["Mom's Radio 97.9 Laoag", 'DWSN-FM', '97.9MHz', '5kW', 'Laoag']
SQL:

assistant: SELECT COUNT("Location") FROM "Table" WHERE "Callsign" = 'DXJP-FM';