Information: - The Cycloramphidae are a family of frogs endemic to southeastern Brazil. This family has seen large changes in its composition. Genera that have at some point been included in the Cycloramphidae are at present placed in the Alsodidae, Hylodidae, Leptodactylidae, and Rhinodermatidae. Of these, the Alsodidae and/or Hylodidae have also been considered as subfamilies of Cycloramphidae (as, respectively, Alsodinae and Hylodinae); the Cycloramphidae, as recognized at present, would be similar to subfamily Cycloramphinae under such system. - Thoropa is a genus of frogs in the Cycloramphidae family from eastern and southeastern Brazil . They are sometimes known as river frogs . - The Rhinodermatidae, commonly known as Darwin's frogs, are a family of small frogs found on the southwest coast of South America. The monotypic genus ("Rhinoderma"), has just two species, of which the Chile Darwin's frog ("R. rufum") is highly endangered or may already be extinct. The better-known Darwin's frog ("R. darwinii") is vulnerable. - Brazil, officially the Federative Republic of Brazil, is the largest country in both South America and Latin America. As the world's fifth-largest country by both area and population, it is the largest country to have Portuguese as an official language and the only one in the Americas. Bounded by the Atlantic Ocean on the east, Brazil has a coastline of . It borders all other South American countries except Ecuador and Chile and covers 47.3% of the continent's land area. Its Amazon River basin includes a vast tropical forest, home to diverse wildlife, a variety of ecological systems, and extensive natural resources spanning numerous protected habitats. This unique environmental heritage makes Brazil one of 17 megadiverse countries, and is the subject of significant global interest and debate regarding deforestation and environmental protection. - The southern frogs form the Leptodactylidae, a diverse family of frogs that probably diverged from other hyloids during the Cretaceous. The family has undergone major taxonomic revisions in recent years, including the reclassification of the former subfamily Eleutherodactylinae into its own family the Eleutherodactylidae; the Leptodactylidae now number 206 species in 15 genera distributed throughout Mexico, the Caribbean, and Central and South America. The family includes terrestrial, burrowing, aquatic, and arboreal members, inhabiting a wide range of habitats. Given the information above, choose from the list below the object entity that exhibits the relation 'parent taxon' with the subject 'thoropa'. Choices: - area - eleutherodactylidae - hylodidae - leptodactylidae - rhinodermatidae
leptodactylidae

(Q).
Information: - Cuxhaven ( German : Bahnhof Cuxhaven ) is a railway station located in Cuxhaven , Germany . The station is located on the Lower Elbe Railway and Bremerhaven -- Cuxhaven railway . The Cuxhaven - Bremerhaven service is operated by EVB . The Cuxhaven to Hamburg service , which was operated by Deutsche Bahn , became a metronom service at the end of 2007 . - The Lower Elbe Railway (or "Unterelbebahn"), is a railway line between Hamburg and Cuxhaven in northwestern Germany, which was opened in 1881 by the "Lower Elbe Railway Company" ("Unterelbesche Eisenbahngesellschaft"). At 103.6 kilometres of length, the line runs close to the southern bank of the Lower Elbe river. - Deutsche Bahn AG (abbreviated as "DB", "DB AG" or "DBAG") is a German railway company. Headquartered in Berlin, it is a private joint-stock company (AG), with the Federal Republic of Germany being its single shareholder. Deutsche Bahn describes itself as the second-largest transport company in the world, after the German postal and logistics company Deutsche Post / DHL, and is the largest railway operator and infrastructure owner in Europe. It carries about two billion passengers each year. - Deutsche Post AG, operating under the trade name Deutsche Post DHL Group, is a German courier company and the world's largest. With its headquarters in Bonn, the corporation has 467,088 employees (FTE 421,270) in more than 220 countries and territories worldwide and generated revenue of 56.63 billion in 2010. Deutsche Post is the successor to the German mail authority Deutsche Bundespost, which was privatized in 1995. Currently, 21% of its shares are held by the state-owned KfW bank, 79% are freely floating; 65.6% of which are held by institutional and 13.4% by private investors. Since its privatization, Deutsche Post has significantly expanded its business area through acquisitions. Deutsche Post is listed in the Euro Stoxx 50 stock market index. - Frankfurt am Main is a metropolis and the largest city in the German state of Hesse and the fifth-largest city in Germany, with a 2015 population of 731,095 within its administrative boundaries, and 2.3million in its urban area. The city is at the centre of the larger Frankfurt Rhine-Main Metropolitan Region, which has a population of 5.8million and is Germany's second-largest metropolitan region after Rhine-Ruhr. Since the enlargement of the European Union in 2013, the geographic centre of the EU is about to the east of Frankfurt's CBD, the Bankenviertel. Frankfurt is culturally and ethnically diverse, with around half of the population, and a majority of young people, having a migration background. A quarter of the population are foreign nationals, including many expatriates. - The European Union (EU) is a political and economic union of member states that are located primarily in Europe. It has an area of , and an estimated population of over 510 million. The EU has developed an internal single market through a standardised system of laws that apply in all member states. EU policies aim to ensure the free movement of people, goods, services, and capital within the internal market, enact legislation in justice and home affairs, and maintain common policies on trade, agriculture, fisheries, and regional development. Within the Schengen Area, passport controls have been abolished. A monetary union was established in 1999 and came into full force in 2002, and is composed of 19 EU member states which use the euro currency. - Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of , and has a largely temperate seasonal climate. With about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular immigration destination in the world. Germany's capital and largest metropolis is Berlin. Other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart and Dusseldorf. Given the information above, choose from the list below the object entity that exhibits the relation 'date of official opening' with the subject 'cuxhaven station'. Choices: - 1881 - 1995 - 1999 - 2010 - 2015
(A).
1881