Complex sentence: The Abbey of Berne, a Dutch abbey of the Premonstratensians, or Norbertines, in Heeswijk, province of North Brabant, is the oldest existing religious community in the Netherlands.
Split into simpler sentences: The Abbey of Berne is a Dutch Abbey of the Premonstratensians, or Norbertines, in Heeswijk, province of North Brabant. This is the oldest existing religious community in the Netherlands.