Question: What country granted citizenship to the winning pair skating team of the 1971 Prize of Moscow News?

full_context: Document 1: 1971 Prize of Moscow News: The 1971 Prize of Moscow News was the sixth edition of an international figure skating competition organized in Moscow, Soviet Union. It was held November 25–28, 1971. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing. Soviets swept the men's podium, led by Sergei Chetverukhin. The ladies' category was won by Marina Titova, who took the title for the second consecutive year. Olympic champions Ludmila Belousova / Oleg Protopopov won the pairs' title, defeating two pairs who had beaten them a year earlier. World champions Lyudmila Pakhomova / Alexander Gorshkov took gold in the ice dancing event for the third consecutive year.
Document 2: 1979 Prize of Moscow News: The 1979 Prize of Moscow News was the 14th edition of an international figure skating competition organized in Moscow, Soviet Union. It was held November 28 – December 1, 1979. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing.
Document 3: 1984 Prize of Moscow News: The 1984 Prize of Moscow News was the 19th edition of an international figure skating competition organized in Moscow, Soviet Union. It was held December 5–9, 1984. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing. The men's category was won by European champion Alexandre Fadeev, who would end his season with the world title. The ladies' gold medal went to Olympic medalist Kira Ivanova, winning her fourth Prize of Moscow News title. Olympic medalists Larisa Selezneva / Oleg Makarov took the pairs' title, earning their second win at the Prize of Moscow News. In the ice dancing category, Olympic bronze medalists Marina Klimova / Sergei Ponomarenko defeated the Olympic silver medalists Natalia Bestemianova / Andrei Bukin.
Document 4: Irina Rodnina: Irina Konstantinovna Rodnina (Russian: Ирина Константиновна Роднина ; ] , born 12 September 1949) is a Russian politician and figure skater, who is the only pair skater to win 10 successive World Championships (1969–78) and three successive Olympic gold medals (1972, 1976, 1980). She was elected to the State Duma in the 2007 legislative election as a member of President Vladimir Putin's United Russia party. As a figure skater, she initially competed with Alexei Ulanov and later teamed up with Alexander Zaitsev. She is the first pair skater to win the Olympic title with two different partners, followed only by Artur Dmitriev.
Document 5: Svetlana Frantsuzova: Svetlana Nikolayevna Frantsuzova (Russian: Светлана Николаевна Французова ; born in 1963) is a former competitive figure skater who represented the Soviet Union. As a single skater, she is the 1980 Prize of Moscow News champion and 1981 Winter Universiade silver medalist. She later switched to pair skating with Oleg Gorshkov. The two won bronze at the 1985 Winter Universiade and silver at the 1985 Prague Skate. They are the parents of Russian figure skater Gordei Gorshkov.
Document 6: Anatoli Evdokimov: Anatoli Grigoryevich Evdokimov (Russian: Анатолий Григорьевич Евдокимов ; 17 June 1945 — April 2016) is a Russian former pair skater who represented the Soviet Union in the 1960s and early 1970s. He began skating at the Luzhniki ice rink in Moscow. His partnership with his future wife, Tatiana Sharanova, began by 1966. The two finished 5th at the 1967 European Championships in Ljubljana, Yugoslavia, and 8th at the 1967 World Championships in Vienna, Austria. They won silver at the 1966 Prize of Moscow News, gold at the 1967 Prague Skate, and silver at the 1970 Blue Swords.
Document 7: 1987 Prize of Moscow News: The 1987 Prize of Moscow News was the 22nd edition of an international figure skating competition organized in Moscow, Soviet Union. It was held November 11–15, 1987. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing. The men's title went to World champion Alexandre Fadeev, winning the Prize of Moscow News for the fourth time. Cindy Bortz, moving up to the senior level after winning the world junior title, won the ladies' category. Ekaterina Gordeeva / Sergei Grinkov, who would win the Olympic gold medal later in the season, took the pairs' title ahead of 1984 Olympic champions Elena Valova / Oleg Vasiliev. The ice dancing title was won by Marina Klimova / Sergei Ponomarenko, who would end their season with an Olympic silver medal.
Document 8: 1982 Prize of Moscow News: The 1982 Prize of Moscow News was the 17th edition of an international figure skating competition organized in Moscow, Soviet Union. It was held December 1–5, 1982. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing.
Document 9: 1981 Prize of Moscow News: The 1981 Prize of Moscow News was the 16th edition of an international figure skating competition organized in Moscow, Soviet Union. It was held December 9–13, 1981. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing.
Document 10: 1972 Prize of Moscow News: The 1972 Prize of Moscow News was the seventh edition of an international figure skating competition organized in Moscow, Soviet Union. It was held December 9–13, 1972. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing. Sergei Chetverukhin won the men's title for the third consecutive year. Canada's Cathy Lee Irwin took the ladies' title ahead of West Germany's Isabel de Navarre and the Soviet Union's Tatiana Oleneva. Irina Vorobieva / Alexander Vlasov defeated Olympic champions Ludmila Belousova / Oleg Protopopov for gold in the pairs' category. In the ice dancing category, world champions Lyudmila Pakhomova / Alexander Gorshkov won their fourth gold medal at the event.
Document 11: 1980 Prize of Moscow News: The 1980 Prize of Moscow News was the 15th edition of an international figure skating competition organized in Moscow, Soviet Union. It was held December 10–14, 1980. Medals were awarded in the disciplines of men's singles, ladies' singles, pair skating and ice dancing.
Document 12: Judy Schwomeyer: Judy Schwomeyer (married name Sladky; born November 14, 1950) is an American ice dancer and actress. As a figure skater, she competed with partner James Sladky. They were five time (1968–1972) U.S. national champions. They are the 1970 World silver medalists and the 1969 & 1971-1972 World bronze medalists.
Document 13: Sergei Grinkov: Sergei Mikhailovich Grinkov (Russian: Серге́й Миха́йлович Гринько́в , February 4, 1967 — November 20, 1995) was a Russian pair skater. Together with partner and wife Ekaterina Gordeeva, he was the 1988 and 1994 Olympic Champion and a four-time World Champion.
Document 14: Ekaterina Gordeeva: Ekaterina "Katia" Alexandrovna Gordeeva (Russian: Екатерина Александровна Гордеева ) (born May 28, 1971) is a Russian (former Soviet) figure skater. Together with her partner and husband, the late Sergei Grinkov, she was the 1988 and 1994 Olympic Champion and four-time World Champion in pair skating. After Grinkov's death, Gordeeva continued performing as a singles skater.
Document 15: Ludmila Belousova: Ludmila Yevgenyevna Belousova (Russian: Людмила Евгеньевна Белоусова ; 22 November 1935 – 29 September 2017) was a Russian pair skater who represented the Soviet Union. With her partner and husband Oleg Protopopov she was a two-time Olympic champion (1964, 1968) and four-time World champion (1965–1968). In 1979 the pair defected to Switzerland and became Swiss citizens in 1995. They continued to skate at ice shows and exhibitions through their seventies.
ground_truth: Switzerland