Table:
text: List of airlines of Singapore
List of airlines of Singapore
List of airlines of Singapore
AIRLINES IATA ICAO CALLSIGN COMMENCED_OPERATIONS
Jetstar Asia Airways 3K JSA JETSTAR ASIA 2004
Scoot TZ SCO SCOOTER 2012
SilkAir MI SLK SILKAIR 1976
Singapore Airlines SQ SIA SINGAPORE 1947
Singapore Airlines Cargo SQ SQC SINGCARGO 2001
Tigerair TR TGW GO CAT 2003
Valuair VF VLU VALUAIR 2004

Question: Who from Singapore Airlines has the callsign ICAO from SCO?

Question: What is started operation among singapore airlines list having icao from slk?

Question: Who is the call sign in the list of Singapore airlines that started operations before 1976?