Context: Saint Petersburg is Russia's second-largest city after Moscow, with five million 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., Tallinn (or ) is the capital and largest city of Estonia. It is situated on the northern coast of the country, on the shore of the Gulf of Finland, south of Helsinki, east of Stockholm and west of Saint Petersburg. From the 13th century until 1918 (and briefly during the Nazi occupation of Estonia from 1941 to 1944), the city was known as Reval. Tallinn occupies an area of and has a population of 443,894. Approximately 32% of Estonia's total population lives in Tallinn., 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., Uusimaa or Nyland (both names mean new land) is a region in Finland. It borders the regions Southwest Finland, Tavastia Proper, Päijänne Tavastia and Kymenlaakso. Finlands capital Helsinki (its largest city) and its second largest city Espoo are both located centrally in Uusimaa, making it by far the most populous region., Finland , officially the Republic of Finland, is a sovereign state in Northern Europe. A peninsula with the Gulf of Finland to the south and the Gulf of Bothnia to the west, the country has land borders with Sweden to the northwest, Norway to the north, and Russia to the east. Estonia is south of the country across the Gulf of Finland. Finland is a Nordic country situated in the geographical region of Fennoscandia, which also includes Scandinavia. Finland's population is 5.5 million (2014), staying roughly on the same level over the past two decades. The majority of the population is concentrated in the southern region. In terms of area, it is the eighth largest country in Europe and the most sparsely populated country in the European Union., Helsinki  is the capital and largest city of Finland. It is in the region of Uusimaa, in southern Finland, on the shore of the Gulf of Finland. Helsinki has a population of , an urban population of 1,214,210, and a metropolitan population of over 1.4 million, making it the most populous municipality and urban area in Finland. Helsinki is located some north of Tallinn, Estonia, east of Stockholm, Sweden, and west of Saint Petersburg, Russia. Helsinki has close historical connections with these three cities., MS Celestyal Olympia is a cruise ship owned by the Cyprus - based Celestyal Cruises , formally Louis Cruise Lines . In April 2012 she was named Louis Olympia after operating as the Thomson Destiny for Thomson Cruises . She was built in 1982 at Wärtsilä Hietalahti shipyard in Helsinki , Finland for Royal Caribbean Cruise Lines as MS Song of America . Between 1999 and 2004 she sailed for Sun Cruises as MS Sunbird . She was previously under charter to the United Kingdom - based Thomson Cruises up until April 2012 as the MS Thomson Destiny . She has since sailed for Louis Cruises as MS Louis Olympia , and as MS Celestyal Olympia since 2014 ., Royal Caribbean International is a cruise line brand founded in Norway and based in Miami, Florida, United States. It is owned by Royal Caribbean Cruises Ltd. , the line operated 23 ships, had three additional ships on order, and controlled 17 percent of the cruise market worldwide. All ships under the Royal Caribbean International brand have names ending with "of the Seas" (e.g. ) a practice which began in 1991. Sister brands owned by Royal Caribbean Cruises Ltd. are Celebrity Cruises, Azamara Cruises, Pullmantur Cruises and CDF Croisières de France., Sweden, officially the Kingdom of Sweden (Swedish: ), is a Scandinavian country in Northern Europe. It borders Norway to the west and Finland to the east, and is connected to Denmark in the southwest by a bridge-tunnel across the Öresund. At , Sweden is the third-largest country in the European Union by area, with a total population of 10.0 million. Sweden consequently has a low population density of , with the highest concentration in the southern half of the country. Approximately 85% of the population lives in urban areas., Thomson Cruises is a British cruise line operated by Thomson, that offers cruises around Europe with ships from Louis Cruise Lines, Royal Caribbean International and Holland America Line., Holland America Line is an American/British owned cruise line; a subsidiary of Carnival Corporation & plc. Originating in the Netherlands, the company is now based in Seattle, United States., Hietalahti shipyard (also known as Helsinki New Shipyard) is a shipyard in Hietalahti, in downtown Helsinki, Finland. It is operated by Arctech Helsinki Shipyard, a subsidiary of Russian state-owned United Shipbuilding Corporation, Subject: ms celestyal olympia, Relation: operator, Options: (A) denmark (B) finland (C) holland america line (D) netherlands (E) norway (F) pullmantur cruises (G) royal caribbean international (H) southern
Output: royal caribbean international