Simplify the following text for a Grade 10 native English-speaking person.
Original: The Royal Concertgebouw Orchestra ( Dutch : Koninklijk Concertgebouworkest ) is a symphony orchestra of the Netherlands , based at the Concertgebouw ( concert hall ) in Amsterdam .
Simplified: The Royal Concertgebouw Orchestra ( in Dutch : Koninklijk Concertgebouworkest ) is an orchestra in the Netherlands . The orchestra is based in Amsterdam .