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

Question: Which Airline has a Fleet size larger than 17, and a IATA of pr?
SQL: SELECT "airline" FROM airlines_ph WHERE "fleet_size" > 17 AND "iata" = 'pr'

Question: Which ICAO has a Fleet size of 2?
SQL: SELECT "icao" FROM airlines_ph WHERE "fleet_size" = 2

Question: What is the of Fleet size with a IATA of pr, and a Commenced operations smaller than 1941?
SQL: SELECT SUM("fleet_size") FROM airlines_ph WHERE "iata" = 'pr' AND "commenced_operations" < 1941

Question: Which ICAO has a Commenced operations larger than 2011?
SQL: SELECT "icao" FROM airlines_ph WHERE "commenced_operations" > 2011