Complex sentence: Pennock Island is located in the U.S. state of Alaska near the city of Ketchikan, the island is situated within the Ketchikan Gateway Borough and is part of the Alexander Archipelago.
Split into simpler sentences: Pennock Island is located in the U.S. state of Alaska near the city of Ketchikan. The island is situated within the Ketchikan Gateway Borough and is part of the Alexander Archipelago.