What was the callsign in Zamboanga?
CREATE TABLE table_12547903_3 (
    callsign VARCHAR,
    location VARCHAR
)
SELECT callsign FROM table_12547903_3 WHERE location = "Zamboanga"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the callsign in Zamboanga? ### Input: CREATE TABLE table_12547903_3 (
    callsign VARCHAR,
    location VARCHAR
) ### Response: SELECT callsign FROM table_12547903_3 WHERE location = "Zamboanga"