Information: - The Blagoveshchensky (Annunciation) Bridge (from 1855 to 1918 Nikolaevsky Bridge, ; from 1918 to 2007 called Lieutenant Schmidt Bridge) is the first permanent bridge built across the Neva River in Saint Petersburg, Russia. It connects Vasilievsky Island and the central part of the city (Admiralteysky raion). The bridge's length is 331 meters and the width was 24 meters. The original name of the bridge was Nevsky Bridge. It was later renamed Blagoveshchensky Bridge. After the death of Tsar Nicholas I, it was named Nikolaevsky Bridge in his honor, and in 1918 it was renamed for Lieutenant Schmidt. - The Neva Bay (Russian: , "Nevskaya Guba"), also known as the Gulf of Kronstadt, is the easternmost part of the Gulf of Finland between Kotlin Island and the Neva River estuary where Saint Petersburg city centre is located. It has a surface area of . The entire bay has been separated from the Gulf of Finland by the 25km long Saint Petersburg Dam. The area of water separated by the dam is . The entire coastline is designated part of St. Petersburg rather than of Leningrad Oblast. - The Danube (, known by various names in other languages) is Europe's second-longest river, after the Volga River, and also the longest river in the European Union region. It is located in Central and Eastern Europe. - The Rhine (, , ) is a European river that begins in the Swiss canton of Graubunden in the southeastern Swiss Alps, forms part of the Swiss-Austrian, Swiss-Liechtenstein, Swiss-German and then the Franco-German border, then flows through the Rhineland and eventually empties into the North Sea in the Netherlands. The largest city on the river Rhine is Cologne, Germany, with a population of more than 1,050,000 people. It is the second-longest river in Central and Western Europe (after the Danube), at about , with an average discharge of about . - The Gulf of Finland is the easternmost arm of the Baltic Sea. It extends between Finland (to the north) and Estonia (to the south) all the way to Saint Petersburg in Russia, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbours are located farthest in, near Saint Petersburg (including Primorsk). As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. - Saint Petersburg is Russia's second-largest city after Moscow, with fivemillion inhabitants in 2012, and an important Russian port on the Baltic Sea. It is politically incorporated as a federal subject (a federal city). Situated on the Neva River, at the head of the Gulf of Finland on the Baltic Sea, it was founded by Tsar Peter the Great on May . In 1914, the name was changed from Saint Petersburg to Petrograd, in 1924 to Leningrad, and in 1991 back to Saint Petersburg. Between 17131728 and 17321918, Saint Petersburg was the imperial capital of Russia. In 1918, the central government bodies moved to Moscow. - Lake Ladoga (or ; [earlier in Finnish "Nevajarvi"]; ) is a freshwater lake located in the Republic of Karelia and Leningrad Oblast in northwestern Russia just outside the outskirts of Saint Petersburg. It is the largest lake in Europe, and the 15th largest freshwater lake by area in the world. "Ladoga Lacus", a methane lake on Saturn's moon Titan, is named after the lake. - A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. - Historical Ingria (or ' "Ingriya", , "Izhorskaya zemlya", or , "Ingermanlandiya" or ') is the geographical area located along the southern shore of the Gulf of Finland, bordered by Lake Ladoga on the Karelian Isthmus in the north and by the River Narva on the border with Estonia in the west. - Bolshaya Neva ( Russian : ) is the largest armlet of Neva River . It starts near the Vasilievsky Island 's Strelka ( easternmost tip of the island ) . The Bolshaya Neva is 3.5 kilometres ( 2.2 mi ) long ; the width is from 200 to 400 metres ( 660 to 1,310 ft ) and the depth up to 12.8 metres ( 42 ft ) . Its tributaries are Fontanka , Moyka and Novo - Admiralteysky Canal . There are two bridges across Bolshaya Neva : Palace Bridge and Blagoveshchensky Bridge . - Europe is a continent that comprises the westernmost part of Eurasia. Europe is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, and the Mediterranean Sea to the south. To the east and southeast, Europe is generally considered as separated from Asia by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways of the Turkish Straits. Yet the non-oceanic borders of Europea concept dating back to classical antiquityare arbitrary. The primarily physiographic term "continent" as applied to Europe also incorporates cultural and political elements whose discontinuities are not always reflected by the continent's current overland boundaries. - Palace Bridge ("Dvortsoviy Most"), a road- and foot-traffic bascule bridge, spans the Neva River in Saint Petersburg between Palace Square and Vasilievsky Island. Like every other Neva bridge (except for Big Obukhovsky Bridge), it is drawn by night, making foot travel between various parts of the city virtually impossible. It was built by the French firm Societe de Construction des Batignolles between 1912 and 1916. - The Neva is a river in northwestern Russia flowing from Lake Ladoga through the western part of Leningrad Oblast (historical region of Ingria) to the Neva Bay of the Gulf of Finland. Despite its modest length of , it is the fourth largest river in Europe in terms of average discharge (after the Volga, the Danube and the Rhine). What object entity has the relation of 'mouth of the watercourse' with the subject 'bolshaya neva river'? Choices: - arctic ocean - atlantic ocean - baltic sea - danube - gulf of finland - lake ladoga - neva - neva bay - north sea - rhine - sea - volga
The answer to this question is:
neva bay