Please answer the following question: Information: - Pozzuoli is a city and "comune" of the Metropolitan City of Naples, in the Italian region of Campania. It is the main city of the Phlegrean Peninsula. - Campania is a region in Southern Italy. The region at the end of 2014 had a population of around 5,869,000 people, making it the third-most-populous region of Italy; its total area of makes it the most densely populated region in the country. Located on the Italian Peninsula, with the Mediterranean Sea to the west, it includes the small Phlegraean Islands and Capri for administration as part of the region. - Soccavo is a western quarter of Naples, with a population of about 60,000. - Naples (Neapolitan: "Napule" or ; meaning "new city") is the capital of the Italian region Campania and the third-largest municipality in Italy, after Rome and Milan. In 2015, around 975,260 people lived within the city's administrative limits. The Metropolitan City of Naples had a population of 3,115,320. Naples is the 9th-most populous urban area in the European Union with a population of between 3 million and 3.7 million. About 4.4 million people live in the Naples metropolitan area, one of the largest metropolises on the Mediterranean Sea. - Pianura ( Italian : '' plain '' ) is a western suburb of Naples , southern Italy . It is bounded on one side by the area of Soccavo and on the other side by the outskirts of the town of Pozzuoli . - The (plural: "") is a basic administrative division in Italy, roughly equivalent to a township or municipality. What is the relationship between 'pianura' and 'quarter of naples'?
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