Information: - Tampere (Swedish: "Tammerfors" ) is a city in Pirkanmaa, southern Finland. It is the most populous inland city in any of the Nordic countries. - 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. - Pirkanmaa (also known as Tampere Region in government documents), is a region of Finland. It borders on the regions of Satakunta, Tavastia Proper, Paijat-Hame, Southern Ostrobothnia, Central Finland and Southwest Finland. - The 1973 ICF Canoe Sprint World Championships were held in Tampere, Finland. - The Nordic countries or Nordics are a geographical and cultural region in Northern Europe and the North Atlantic, where they are most commonly known as Norden (lit., "The North"). They consist of Denmark, Finland, Iceland, Norway, and Sweden, including their associated territories (Greenland, the Faroe Islands, and the Aland Islands). - Oleg Kaidov is a Soviet sprint canoer who competed in the early 1970s . He won a gold medal in the C - 2 500 m event at the 1973 ICF Canoe Sprint World Championships in Tampere . After reading the paragraphs above, we are interested in knowing the entity with which 'oleg kaidov' exhibits the relationship of 'country of citizenship'. Find the answer from the choices below. Choices: - denmark - finland - greenland - norway - russia
The answer to this question is:
russia