Complex sentence: The Province of Quebec acquired ownership of the entire island in 1971 and later grouped it together with Percé Rock into the Parc national de l'île-Bonaventure-et-du-Rocher-Percé (Bonaventure Island and Percé Rock National Park) in 1985.
Split into simpler sentences: The Province of Quebec acquired ownership of the entire island in 1971. Later the Province of Quebec grouped it together with Percé Rock into the Parc national de l'île-Bonaventure-et-du-Rocher-Percé (Bonaventure Island and Percé Rock National Park) in 1985.