Question: Corato railway station is in the southern Italian region bordering which sea to its east?

Context paragraphs:
San Martino d'Agri: San Martino d'Agri is a hill town and "comune" in the province of Potenza, in the Southern Italian region of Basilicata.  It is a town of less the 800 people most of the year, but in August the population swells to around 2,000 when "Sammartinesi" return for the "Festa della Madonna della Rupe", some coming from as far as North America and South America.  San Martino d'Agri is on the peak of a hill at 666 meters above sea level.  At one point in the town's history, there was a major mudslide ("frana") that wiped out most of the town; however, it recovered.  Atop the hill stands a medieval castle, which was first owned by the "barone".  However, after the "barone" was overthrown, there was an earthquake that destroyed much of the town.  The castle was later renovated and divided up into sections for different families' housing.  In the late mid-1900s, a section was abandoned and wasn't renovated until 2003.  That part, as well as another is currently owned and still being renovated.

Salvatore Toma: Salvatore Toma (11 May 1951 – 17 March 1987) was an Italian poet, born in the Southern Italian region of Apulia.  A visionary and passionate poet, he delved deeply into the meaning of love and death, while searching within man and nature the connection with universal consciousness.  A restless soul, part of the so-called wave of the Italian "accursed poets", he committed suicide in 1987 aged 35.

Corato railway station: Corato (Italian: "Stazione di Corato" ) is a railway station in the Italian town of Corato, in the Province of Bari, Apulia.  The station lies on the Bari–Barletta railway.  The train services are operated by Ferrotramviaria.

Grassano: Grassano is a town and "comune" in the province of Matera, in the southern Italian region of Basilicata.  It is located between the Bradano and Basento rivers at an elevation ranging from about 150 to above sea level.  The town proper is 43 km from Matera and 59 km from the regional capital, Potenza.

Coastal–Karst Statistical Region: The Coastal–Karst Statistical Region (Slovene: "Obalno-kraška statistična regija" , Italian: "Litorale-Carso" ) is a statistical region in southwest Slovenia.  It covers the traditional and historical regions of Slovenian Istria and most of the Karst Plateau, which traditionally belonged to the County of Gorizia and Gradisca.  The region has a sub-Mediterranean climate and is Slovenia's only statistical region bordering the sea.  Its natural features enable the development of tourism, transport, and special agricultural crops.  More than two-thirds of gross value added are generated by services (trade, accommodation, and transport); most was generated by activities at the Port of Koper and through seaside and spa tourism.  The region recorded almost a quarter of all tourist nights in the country in 2013; slightly less than half by domestic tourists.  Among foreign tourists, Italians, Austrians, and Germans predominated.  In 2012 the region was one of four regions with a positive annual population growth rate (8.1‰).  However, the age structure of the population was less favourable: in mid-2013 the ageing index was 133.3, which means that for every 100 inhabitants under 15 there were 133 inhabitants 65 or older.  The farms in this region are among the smallest in Slovenia in terms of average utilised agricultural area per farm and in terms of the number of livestock on farms.

Apulia: Apulia ( ; Italian: "Puglia" ] ; Neapolitan: "Pùglia" ] ; Albanian: "Pulia" ; Ancient Greek: Ἀπουλία , Apoulia) is a region of Italy in Southern Italy bordering the Adriatic Sea to the east, the Ionian Sea to the southeast, and the Strait of Òtranto and Gulf of Taranto to the south.  Its southernmost portion, known as the Salento peninsula, forms a "stiletto" heel on the "boot" of Italy.  The region comprises 19345 sqkm , and its population is about four million.

Podargoni: Podargoni (Calabrian-Greek dialect: Podàrghoni), is a "comune" in the province of Reggio Calabria, in the southern Italian region of Calabria.  Together with Ortì and Terreti it forms the 11th district of the municipality of Reggio Calabria.  It is a small town close to the Aspromonte mountains, and is 500 m above sea level, at the foot of Mount Marrapà and on the left bank of the river Gallico.  The town is inhabited by the Griko people who formerly spoke their ancestral Calabrian Greek dialect.

Calvi, Campania: Calvi is a "comune" (municipality) in the Province of Benevento in the southern Italian region Campania, located about 60 km northeast of Naples and about 10 km southeast of Benevento.  It also belongs to the Samnium historical region.  Its territory has an altitude of between 169m and 388m above sea level.

Generoso Vetta railway station: Generoso Vetta is the upper terminal railway station of the Monte Generoso railway, a rack railway that connects Capolago with the summit of Monte Generoso in the Swiss canton of Ticino.  At 1,592 metres above sea level, it is the highest railway station in Ticino.  The station is situated a short walk from the mountain summit, and only a few metres from the international border with the Italian region of Lombardy.

Nova Siri: Nova Siri is a town and "comune" in the province of Matera, in the Southern Italian region of Basilicata.  Nova Siri is close to the site of the ancient Ionian colony of Siris.  Nova Siri is formed by two small towns: the old, historic Nova Siri Centre ('paese') and the coastal town developed from the 1970s - Nova Siri Station ('Scalo').  The centre is sited on a hill at 350 m above sea level about 9 km from the sea.

Supporting paragraphs: Corato railway station Apulia
Answer: Adriatic Sea