Question:  Cartoceto is a "comune" located about 50 km northwest of a city that had how many inhabitants as of 2015 ?
Sentence (from "Ancona"): The city is located 280 km northeast of Rome, on the Adriatic Sea, between the slopes of the two extremities of the promontory of Monte Conero, Monte Astagno and Monte Guasco.
Relevant evidence: No