Question: What year was the skating partner of the first Native American female athlete to participate in the Winter Olympics born?

full_context: Document 1: Sergei Ponomarenko: Sergei Vladilenovich Ponomarenko (Russian: Серге́й Владиленович Пономаренко ; born October 6, 1960) is a Russian former competitive ice dancer who competed for the Soviet Union and the Unified team. With skating partner and wife Marina Klimova, he is the 1992 Olympic champion, 1988 Olympic silver medalist, 1984 Olympic bronze medalist, three-time World champion, and four-time European champion.
Document 2: Liliyana Natsir: Liliyana Natsir (born 9 September 1985) is an Indonesian female badminton player who specializes in doubles. With one gold and silver from Olympic Games and four gold medals at BWF World Championships, she is regarded as one of the greatest mixed doubles players in the history. She gained huge success by partnering with two different players. Her current partner is Tontowi Ahmad since 2011, after separating from her previous partner, Nova Widianto. She also won three titles in a row from 2012–2014 at All England Badminton Championships, one of the most prestigious and oldest tournament in the sport. Been entering the top level since 18 years old, her tactical awareness, game vision, and dominance at the front court are considered as one of the best in the tour. In 2016, she and Tontowi Ahmad became the first Indonesian mixed doubles pair to win gold medal at the Olympic Games by beating Chan Peng Soon and Goh Liu Ying of Malaysia.
Document 3: Naomi Lang: Naomi Lang (born December 18, 1978) is an American ice dancer. With skating partner Peter Tchernyshev, she is a two-time (2000 and 2002) Four Continents champion, a five-time (1999–2003) U.S. national champion, and competed at the 2002 Olympic Winter Games. Lang is the first Native American female athlete to participate in the Winter Olympics.
Document 4: 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 5: Jenny Schmidgall-Potter: Jennifer Lynn Schmidgall-Potter (born January 12, 1979) is an American ice hockey player. She is a member of the United States women's national ice hockey team. She won a gold medal at the 1998 Winter Olympics, silver medals at the 2002 Winter Olympics and 2010 Winter Olympics, and a bronze medal at the 2006 Winter Olympics. Currently, she plays for the Minnesota Whitecaps of the Western Women's Hockey League, where she won the league championship and was named MVP for the 2008–09 season. She was selected to the 2010 US Olympic team and was the only mother on the team.
Document 6: Ramil Sarkulov: Ramil Sarkulov (born June 16, 1981 in Tashkent) is an Uzbekistani former competitive ice dancer. His partnership with Olesya Pronina lasted at least five seasons, until 1999. He then competed for three seasons with Julia Klochko (1999–2002), training under Galina Churilova in Kharkiv, Ukraine. Klochko/Sarkulov won the Uzbekistani national title in the 2001–02 season and appeared at four ISU Championships – two Four Continents and two Junior Worlds. In the 2002–03 season, he competed with Olga Akimova, coached by Churilova. Sarkulov then had a brief partnership with Ashley Taylor but the two never competed together. In 2007, he teamed up with Sun-hye Yu. Coached by Genrikh Sretenski in the United States, they placed 12th at the 2008 Four Continents and 29th at the 2008 World Championships.
Document 7: Nancy Kerrigan: Nancy Ann Kerrigan (born October 13, 1969) is an American former figure skater. She won bronze medals at the 1991 World Championships and 1992 Winter Olympics, and a silver medal at the 1992 World Championships, before becoming the 1993 US National Champion.
Document 8: Alexandr Kirsanov: Alexandr (Sasha) Kirsanov (Russian: Александр Кирсанов ; born August 17, 1978) is a retired ice dancer who competed for the United States, Azerbaijan, and Russia. With Christie Moxley for the U.S., he is the 2003 Nebelhorn Trophy bronze medalist. He also competed with Barbara Hanley for Azerbaijan and with Olga Pogosian for Russia. Following his retirement from competition in 2004, he is a coach and choreographer in Delaware.
Document 9: Naomi Yashiro: Naomi Yashiro (矢代直美, born 30 December 1977) is a Japanese former basketball player who competed in the 2004 Summer Olympics. She has been working as a cabin crew at the Japan Airlines and joined its team JAL Rabbits.
Document 10: 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 11: Ruslan Zhiganshin: Ruslan Nailevich Zhiganshin (Russian: Руслан Наильевич Жиганшин ; born 25 September 1992) is a Russian ice dancer. With partner Elena Ilinykh, he is the 2015 Russian national champion.
Document 12: Peter Cain: Peter Christian Cain (born 20 November 1958) is an Australian pair skater who currently works as a coach. With sister Elizabeth Cain, he is the 1976 World Junior bronze medalist and a four-time Australian national champion. Their highest placement at the World Championships was 12th in 1977. They competed in the 1980 Winter Olympics, finishing eleventh. He is the uncle and former coach of Australian national champion Sean Carlow and father of American skater Ashley Cain. He also coaches Alexei Krasnozhon and Brooklee Han. He currently works as a coach in the Euless, Texas area.
Document 13: Chloe Kim: Chloe Kim (Korean: 김선, born April 23, 2000) is an elite American snowboarder, currently sponsored by Target. While being too young to compete in the 2014 Sochi Winter Olympics Kim earned silver in superpipe in the 2014 Winter X Games, coming behind Kelly Clark. In 2015 Chloe won Gold in the super pipe event in the Winter X Games beating Kelly Clark. With this win, at age 14, Kim became the youngest gold medalist until she lost this record to Kelly Sildaru who won gold in 2016 at the age of 13. In the 2016 X Games, she became the first person under the age of 16 to win three gold medals (and thus the first such person to win back-to-back gold medals) at an X Games. At that year's U.S. Snowboarding Grand Prix, she became the first woman to land back-to-back 1080 spins in a snowboarding competition. She scored a perfect 100 points, and is believed to be the second rider ever to do so, after Shaun White.
Document 14: Themistocles Leftheris: Themistocles Nicholas "Themi" Leftheris (born December 20, 1982) is an American pair skater. With former partner Naomi Nari Nam, he is the 2006 Skate America bronze medalist and 2007 U.S. national bronze medalist. With current partner Ji Min-ji, he is a two-time (2016, 2017) South Korean national champion.
Document 15: Peter Tchernyshev: Peter Tchernyshev (Russian: Пётр Андреевич Чернышёв ; also romanized as "Pyotr Andreyevich Chernyshev"; born February 6, 1971) is a Russian-American ice dancer. With skating partner Naomi Lang, he is a two-time (2000 and 2002) Four Continents champion, a five-time (1999–2003) U.S. national champion, and competed at the Winter Olympics in 2002.
ground_truth: 1971