user: ### NOW ANSWER:
Question: What is the number of people on board at Iberia Airline, with the aircraft type of Lockheed L-1049G?
Columns: ['Date', 'Airline', 'Aircraft type', 'Registration', 'People on board', 'Fatalities']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['1965-05-05', 'Iberia', 'Lockheed L-1049G', 'EC-AIN', 49.0, 30.0]
SQL:

assistant: SELECT AVG("People on board") FROM "Table" WHERE "Airline" = 'Iberia' AND "Aircraft type" = 'Lockheed L-1049G';