Complex sentence: Pope Stephen II re-consecrated Pepin III (the Short) as king of the Franks at the Basilica of Saint-Denis outside Paris, bestowing upon him the additional title of Patricius of the Romans and becomes the first recorded crowning of a civil ruler by a pope.
Split into simpler sentences: Pope Stephen II re-consecrates Pepin III (the Short) as king of the Franks, at the Basilica of Saint-Denis outside Paris, bestowing upon him the additional title of Patricius of the Romans. This marks the first recorded crowning of a civil ruler by a pope.