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Given the following schema: Airport (City, Country, NumberOfRunways) Flight (FlightID, Day, DepartCity, DepartTime, ArrCity, ArrTime, PlaneType) Plane (PlaneType, NumberOfPassengers) Covert it to Relational Algebra way.

Given the following schema:

Airport (City, Country, NumberOfRunways)

Flight (FlightID, Day, DepartCity, DepartTime, ArrCity, ArrTime, PlaneType)

Plane (PlaneType, NumberOfPassengers)

Covert it to Relational Algebra way. The question is, we want to find out:

The Belgian airport that have only domestic flights.

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