Question: John Allen Wisden Nicks, is a British figure skating coach and former pair skater, as a coach, his skating pupils have included which American figure skater, and is the 2006 Olympic silver medalist?

Context paragraphs:
John Nicks: John Allen Wisden Nicks (born April 22, 1929) is a British figure skating coach and former pair skater.  With his sister and pairs partner, Jennifer Nicks, he is the 1953 World champion.  As a coach, his skating pupils have included Peggy Fleming, pairs team Tai Babilonia and Randy Gardner, Kristi Yamaguchi, Sasha Cohen, and Ashley Wagner.

Hayes Alan Jenkins: Hayes Alan Jenkins (born March 23, 1933) is a retired American figure skater.  He won four consecutive World Figure Skating Championships from 1953 to 1956.  He also won the gold medal in the 1956 Winter Olympics, after placing 4th in the 1952 Winter Olympics.  His brother David Jenkins won the gold in 1960.  Jenkins later married Carol Heiss, the 1956 Olympic silver medalist and the 1960 Olympic gold medalist.  The couple had three children, but none of them became a competitive figure skater.

Dudley Richards: Dudley "Dud" Shaw Richards (February 4, 1932 - February 15, 1961) was an American figure skater who competed in men's singles and pairs.  In singles, he won the bronze medal at the 1953 United States Figure Skating Championships and finished sixth at that year's World Figure Skating Championships.  In pairs, he once skated with future Olympic gold medalist Tenley Albright, before later teaming up with Maribel Owen.  After winning the bronze medal at Nationals in 1958 and 1959, the pair captured the silver in 1960 and finished tenth at that year's Winter Olympic Games.  In 1961, Owen and Richards won the gold medal at the U.S. Championships and finished second at the North American Figure Skating Championships.

Takashi Mura: Takashi Mura (無良 隆志 , Mura Takashi , born November 11, 1960) is a Japanese figure skating coach and former competitor.  He is the 1976 World Junior silver medalist, winning a medal at the inaugural event.  He went on to win six medals in singles at the Japan Figure Skating Championships, and won it twice in pairs.  His highest placement as a singles skater at the World Figure Skating Championships was 12th, in 1982.  As a pair skater, he placed 12th with Yukiko Okabe in 1980, and 14th with Toshimi Ito in 1983.

Carol Heiss: Carol Elizabeth Heiss Jenkins (born January 20, 1940) is a retired American figure skater and actress.  She is the 1960 Olympic Champion in Ladies Singles, 1956 Olympic silver medalist and five-time World Champion (1956–1960).  Heiss is a member of the World Figure Skating Hall of Fame and the United States Figure Skating Hall of Fame.

Kenneth Shelley: Kenneth Gene Shelley (born October 4, 1951) is an American figure skater who competed in both singles and pairs.  As a single skater, he won the 1972 United States Figure Skating Championships and placed 4th at the 1972 Winter Olympics.  His highest placement at the World Figure Skating Championships was a single skater was 7th, in 1972.  As a pair skater, he competed with JoJo Starbuck, with whom he is a three-time National Champion.  Starbuck and Shelley competed in two Olympic Games, placing 13th in 1968 and 4th in 1972, and won two bronze medals at the World Figure Skating Championships.  When they made the 1968 Olympic team, they were the youngest athletes the United States had ever sent to the Olympics.

Reinhard Ketterer: Reinhard E. Ketterer (born 1948 in Garmisch-Partenkirchen) is a German retired competitive figure skater who competed for West Germany as a single skater and pair skater.  As a single skater, he is the 1969 German national champion, and as a pair skater, he is the 1972 German bronze medalist with partner Gabriele Cieplik.  He is still a figure skating coach.

Sasha Cohen: Alexandra Pauline "Sasha" Cohen (born October 26, 1984) is an American figure skater.  She is the 2006 Olympic silver medalist, a three-time World Championship medalist, the 2003 Grand Prix Final Champion, and the 2006 U.S. Champion.

Naomi Nari Nam: Naomi Nari Nam (born July 6, 1985) is an American figure skater who competed in both single skating and pair skating.  As a single skater, she is the 1999 U.S. national silver medalist.  As a pair skater, she is the 2006 Skate America bronze medalist and 2007 U.S. national bronze medalist with Themistocles Leftheris.

Jason Dungjen: Jason Dungjen (born September 28, 1967) is an American figure skating coach and a former pair skater.  With Kyoko Ina, he is a two-time Skate America silver medalist, a three-time Nations Cup medalist, and a two-time U.S. national champion.  With Susan Dungjen, he is the 1983 NHK Trophy silver medalist and 1984 World Junior silver medalist.

Supporting paragraphs: John Nicks Sasha Cohen
Answer: Sasha Cohen