What callsign has commenced operations in 2011?
CREATE TABLE table_name_34 (callsign VARCHAR, commenced_operations VARCHAR)
SELECT callsign FROM table_name_34 WHERE commenced_operations = 2011
### Context: CREATE TABLE table_name_34 (callsign VARCHAR, commenced_operations VARCHAR) ### Question: What callsign has commenced operations in 2011? ### Answer: SELECT callsign FROM table_name_34 WHERE commenced_operations = 2011