Complex sentence: Sarah has two daughters, Princesses Beatrice and Eugenie of York who are respectively seventh and eighth in line to succeed their grandmother, Queen Elizabeth II as monarch of 16 independent Commonwealth realms.
Split into simpler sentences: Sarah has two daughters, Princesses Beatrice and Eugenie of York. They are respectively seventh and eighth in line to succeed their grandmother, Queen Elizabeth II as monarch of 16 independent Commonwealth realms.