Given the question: Information: - The 1968 Winter Olympics, officially known as the X Olympic Winter Games (French: Les "Xes Jeux olympiques d'hiver"), were a winter multi-sport event which was celebrated in 1968 in Grenoble, France and opened on 6 February. Thirty-seven countries participated. Norway won the most medals, the first time a country other than the USSR had done so since the USSR first entered the Winter Games in 1956. - Grenoble is a city in southeastern France, at the foot of the French Alps where the river Drac joins the Isere. Located in the Auvergne-Rhone-Alpes region, Grenoble is the capital of the department of Isere and plays the role of an important scientific centre of Europe. The city advertises itself as the "Capital of the Alps", due to its size and its proximity to the mountains. - Holmenkollen is a neighborhood in the Vestre Aker borough of Oslo, Norway. In addition to being a residential area, the area has been a ski recreation area since the late 19th century, with its famous ski jumping hill, the Holmenkollbakken, hosting competitions since 1892. To the north, the area borders to the woodlands area Marka. - Oslo is the capital and the most populous city in Norway. It constitutes both a county and a municipality. Founded in the year 1040, and established as a "kaupstad" or trading place in 1048 by Harald Hardrada, the city was elevated to a bishopric in 1070 and a capital under Haakon V of Norway around 1300. Personal unions with Denmark from 1397 to 1523 and again from 1536 to 1814 and with Sweden from 1814 to 1905 reduced its influence. After being destroyed by a fire in 1624, the city was moved closer to Akershus Fortress during the reign of Christian IV of Denmark and renamed Christiania in his honour. It was established as a municipality ("formannskapsdistrikt") on 1 January 1838. Following a spelling reform, it was known as Kristiania from 1877 to 1925, at which time its original Norwegian name was restored. - Franz Keller ( born 19 January 1945 ) was a West German nordic combined skier . At the 1968 Winter Olympics in Grenoble , he won the gold medal in the individual event . Keller also won a silver at the 1966 FIS Nordic World Ski Championships in the individual event and won the event at the Holmenkollen ski festival in 1967 . Keller received the Holmenkollen medal in 1973 ( Shared with Einar Bergsland and Ingolf Mork . ) . - Norway (; Norwegian: (Bokmal) or (Nynorsk); Sami: "Norgga"), officially the Kingdom of Norway, is a sovereign and unitary monarchy whose territory comprises the western portion of the Scandinavian Peninsula plus the island Jan Mayen and the archipelago of Svalbard. The Antarctic Peter I Island and the sub-Antarctic Bouvet Island are dependent territories and thus not considered part of the Kingdom. Norway also lays claim to a section of Antarctica known as Queen Maud Land. Until 1814, the Kingdom included the Faroe Islands (since 1035), Greenland (1261), and Iceland (1262). It also included Shetland and Orkney until 1468. It also included the following provinces, now in Sweden: Jamtland, Harjedalen and Bohuslan. - The French Alps are the portions of the Alps mountain range that stand within France, located in the Rhone-Alpes and Provence-Alpes-Cote d'Azur regions. While some of the ranges of the French Alps are entirely in France, others, such as the Mont Blanc massif, are shared with Switzerland and/or Italy. - Ski jumping is a form of Nordic skiing in which athletes descend a specially constructed takeoff ramp (known as the "inrun"), jump from the end of it (the "table") with as much power as they can generate, and "fly" as far as possible down a steeply sloped hill. Points are awarded for distance and style by five judges, with competition sanctioned by the International Ski Federation (FIS). To enable the athletes (who are known as "ski jumpers") to effectively glide such long distances and land safely, the skis they use are considerably wider and longer than their cross-country and alpine skiing counterparts. Ski jumping is predominantly a winter sport and has been part of the Winter Olympic Games since its inception in 1924 for men and since 2014 for women. Since 1954 it is possible to ski jump in summer on artificial surfaces made from plastic. Along with cross-country skiing, ski jumping is one of two sports which form the Nordic combined discipline. Holmenkollbakken in Oslo is the holy place of this sport, which is most popular in Austria, Germany, Finland, Japan, Norway, Poland and Slovenia. - France, officially the French Republic, is a country with territory in western Europe and several overseas regions and territories. The European, or metropolitan, area of France extends from the Mediterranean Sea to the English Channel and the North Sea, and from the Rhine to the Atlantic Ocean. Overseas France include French Guiana on the South American continent and several island territories in the Atlantic, Pacific and Indian oceans. France spans and had a total population of almost 67 million people as of January 2017. It is a unitary semi-presidential republic with the capital in Paris, the country's largest city and main cultural and commercial centre. Other major urban centres include Marseille, Lyon, Lille, Nice, Toulouse and Bordeaux. - The Holmenkollen Ski Festival (or ) is a traditional annual Nordic skiing event in Holmenkollen, Oslo, Norway. The full official name of the event is Holmenkollen FIS World Cup Nordic. - Nordic combined is a winter sport in which athletes compete in cross-country skiing and ski jumping. Nordic combined at the Winter Olympics and the FIS Nordic Combined World Cup are ongoing. - Isere (Arpitan: "Isera", Occitan: "Isera") is a department in the Auvergne-Rhone-Alpes region in the east of France named after the river Isere. Given the information above, choose from the list below the object entity that exhibits the relation 'country of citizenship' with the subject 'franz keller '. Choices: - austria - denmark - france - french republic - germany - iceland - italy - japan - norway - slovenia - switzerland
The answer is:
germany