Table: airlines_ph
Columns: airline
icao
iata
callsign
commenced_operations
fleet_size
headquarters

Question: What is the fleet size of the airline which has a callsign of cool red?
SQL: SELECT MIN("fleet_size") FROM airlines_ph WHERE "callsign" = 'COOL RED'

Question: How large is the fleet size of the airline with the IATA code of 5j?
SQL: SELECT COUNT("fleet_size") FROM airlines_ph WHERE "iata" = '5J'

Question: Which year did the Angeles City based airline begin operations?
SQL: SELECT "commenced_operations" FROM airlines_ph WHERE "headquarters" = 'Angeles City'

Question: When did the oldest airline start operations?
SQL: SELECT MIN("commenced_operations") FROM airlines_ph

Question: Where is the headquarters of the airline which has the ICAO code of AAU?
SQL: SELECT "headquarters" FROM airlines_ph WHERE "icao" = 'AAU'