What is the call sign for the radio owned by astral media?
CREATE TABLE table_name_7 (call_sign VARCHAR, owner VARCHAR)
SELECT call_sign FROM table_name_7 WHERE owner = "astral media"
### Context: CREATE TABLE table_name_7 (call_sign VARCHAR, owner VARCHAR) ### Question: What is the call sign for the radio owned by astral media? ### Answer: SELECT call_sign FROM table_name_7 WHERE owner = "astral media"