text: In the ninth century, this city's duke Andrew II entered the Pactum Sicardi after calling in Saracen mercenaries to repel an attack of Sicard.
full_question: In the ninth century, this city's duke Andrew II entered the Pactum Sicardi after calling in Saracen mercenaries to repel an attack of Sicard. Rebels based in this city were defeated at the Battle of Rieti, after which it was occupied and administered by Karl von Ficquelmont. The marble calendar of this city claims its first bishop was Asprenas, who was converted by an old woman called Candida the Elder. A republic named for this city was set up after a revolt against viceroy Rodrigo Ponce de León, the Duke of Arcos under Philip III. In 1224, Frederick II established the first public university in this city. In September 1943, a group of street boys spearheaded a Nazi resistance effort called the "Four Days" of this city. Republics based in this city include one led by the fisherman Masaniello, and a six-month state called the Parthenopean Republic in 1799, before it was ruled by Joachim Murat under Napoleon. For 10 points, name this capital of the Campania region just west of the slopes of Mount Vesuvius.
first_sentence: In the ninth century, this city's duke Andrew II entered the Pactum Sicardi after calling in Saracen mercenaries to repel an attack of Sicard.
raw_answer: Naples