Complex sentence: As one of the few members of the Venstre Reform Party, the Danish Liberal party belonging to the nobility, Holstein was isolated by his colleagues and at the same time took a special position within "Venstre".
Split into simpler sentences: As one of the few members of the Venstre Reform Party, the Danish Liberal party. Belonging to the nobility Holstein was isolated by his colleagues and at the same time took a special position within "Venstre".