What was the callsign in Zamboanga?
CREATE TABLE table_12547903_3 (callsign VARCHAR, location VARCHAR)
SELECT callsign FROM table_12547903_3 WHERE location = "Zamboanga"
### Context: CREATE TABLE table_12547903_3 (callsign VARCHAR, location VARCHAR) ### Question: What was the callsign in Zamboanga? ### Answer: SELECT callsign FROM table_12547903_3 WHERE location = "Zamboanga"