Question: Cara Butler is the younger sister of an American stepdancer who is best known for originating the principal female role in what production?

full_context: Document 1: Dan Karaty: Daniel Quinn Karaty (born October 1, 1976) is an American TV personality, actor, producer, dancer and choreographer. He has performed with and/or created routines for pop superstars such as Jessica Simpson, Britney Spears, Kylie Minogue, and *NSYNC. Karaty is also well known as a judge and choreographer on several versions of the global dance competition program "So You Think You Can Dance", including the American, Australian, Canadian versions and as a permanent member of the judge's panel for the Dutch-Belgian version since its first season. In addition, Karaty starred in "Soof," The Netherlands' highest grossing film in 2013. He appears as a judge or mentor on "X Factor", "Everybody Dance Now," "My Name Is Michael", "Holland's Got Talent", "", "Belgian's Got Talent" and "The Ultimate Dance Battle", the last of which he created and on which he serves as executive producer. Previously, Karaty served in the capacity of a performance stager and choreographer on "America's Got Talent".
Document 2: Máirtín O'Connor: Máirtín O'Connor is an Irish button accordionist from Galway, Ireland, who began playing at the age of nine, and whose career has seen him as a member of many traditional music groups that include Skylark, Midnight Well, De Dannan, and The Boys of the Lough. A traditional Irish musician, O'Connor was one of the major forces of the music in the world-renowned "Riverdance".
Document 3: Career Transition For Dancers: Career Transition For Dancers is a nonprofit organization with offices in New York, Los Angeles and Chicago dedicated to helping dancers establish new careers when they have retired from their performing careers. Founded in 1985, the organization has provided over 46,000 hours of individual and group career counseling, with a dollar value of over $4 million, and awarded over $3 million in educational and entrepreneurial support. The organization has 4,600 active dancer-clients and has helped thousands of dancers in 47 states with their transitions through mobile National Outreach Projects. The organization helps dancers in all stages of their career whether they are students, pre-professional, or artists at the peak of their career. Its vision is to help every dancer reach their full potential.
Document 4: Frances Butler: Frances C. Butler (born 1940 in St. Louis, Missouri) is an American book artist and educator. Butler received her B.A. in History at the University of California, Berkeley in 1961, her M.A. in History at Stanford University in 1963, and a second M.A. in Design at UC Berkeley in 1966. She was a professor at UC Berkeley from 1968–70, and began teaching at UC Davis in 1970. She ran Goodstuffs Handprinted Fabric from 1973–79, and co-founded Poltroon Press with Alastair Johnston in 1975.
Document 5: Jean Butler: Jean Butler (born March 14, 1971), is an American stepdancer, choreographer, and actress. She is best known for originating the principal female role in the Irish dance theatrical production "Riverdance".
Document 6: Cara Butler: Cara Butler is an American stepdancer and choreographer. She is the younger sister of dancer Jean Butler.
Document 7: Nate Butler: Nate Butler is an American songwriter, music producer, vocal producer, and recording artist based in Atlanta, Georgia. He has been a part of 45 plus million records sold worldwide at last count. Butler has worked with multi-platinum artists such as Luther Vandross, Victoria Beckham aka Posh Spice, Houston, Craig David, Backstreet Boys, 3LW, Christina Milian, Stacie Orrico, JoJo, Aaron Carter, The Cheetah Girls and others. Butler launched the career of the platinum R&B group 3LW by writing their hit singles: No More (Baby I'ma Do Right) and Playas Gon' Play. Two of the members of 3LW, Kiely Williams and Adrienne Bailon, went on to become members of the worldwide Disney sensation The Cheetah Girls. Butler also penned the notable chart topping R&B smash single "Afterparty" by Koffee Brown, also referred to as a R&B classic.
Document 8: Kerry Butler: Kerry Marie Butler (born June 18, 1971) is an American actress known primarily for her work in theatre.
Document 9: Irish dance: Irish dance or Irish dancing is a group of traditional dance forms originating in Ireland, encompassing dancing both solo and in groups, and dancing for social, competitive and performance purposes. Irish dance in its current form developed from various influences such as French quadrilles and English country dancing throughout the 18th and 19th centuries. Dance was taught by "travelling dance masters" across Ireland throughout this period, and separate dance forms developed according to regional practice and differing purposes. Irish dance became a significant part of Irish culture, particularly for Irish nationalist movements. From the early 20th century, a number of organisations promoted and codified the various forms of dance, creating competitive structures and standardised styles.
Document 10: Ruth Pryor: Ruth Pryor (1906-2001) was a Chicago ballet dancer and instructor, and the first American ballerina to dance the role of the Swan Queen in Swan Lake, in 1930. She was known for "her feat of whirling thirty-six times a minute on her toes," according to the Purple Parrot of Northwestern University.
Document 11: Cornelia Butler: Cornelia H. "Connie" Butler (born 1 February 1963) is an American museum curator. She is currently Chief Curator at the Hammer Museum in Los Angeles. From 2006-2013, she served as the Robert Lehman Foundation Chief Curator of Drawings at the Museum of Modern Art (New York City). Prior to that, she was a curator at the Museum of Contemporary Art, Los Angeles (MOCA) from 1996-2005. Butler also held curatorial positions at the Neuberger Museum of Art (Purchase, New York), Artists Space (New York City), and the Des Moines Arts Center (Iowa). Her multimedia exhibition "WACK! Art and the Feminist Revolution" dealt with international feminist art of the 1970s. Butler is a 1980 graduate of Marlborough School, and a 1984 graduate of Scripps College.
Document 12: Kevin McCormack (dancer): Kevin McCormack (born 1970) is a former professional Irish dancer who spent many years as a Dance Captain with "Riverdance". The Dublin native was part of the original 24 troupe members for "Riverdance's" seven-minute interval act at the 1994 Eurovision Song Contest. A 10-time World Irish Dance Champion, McCormack holds ADCRG titleship which means he is recognised by An Coimisiún Le Rincí Gaelacha, the governing body of Irish dancing worldwide, as being qualified to adjudicate Irish Step dancing on any competitive level throughout the world.
Document 13: Carrie Ann Inaba: Carrie Ann Inaba (born January 5, 1968) is an American dancer, choreographer, television dance competition judge, actress, game show host, and singer. She is best known for her work on ABC TV's "Dancing with the Stars".
Document 14: Riverdance: Riverdance is a theatrical show consisting mainly of traditional Irish music and dance. Featuring Irish dancing champions Jean Butler and Michael Flatley, and with a score composed by Bill Whelan, it originated as an interval performance act during the 1994 Eurovision Song Contest. Shortly afterwards, husband and wife production team John McColgan and Moya Doherty expanded it into a stage show, which opened in Dublin on 9 February 1995. Since then, the show has visited over 450 venues worldwide and been seen by over 25 million people, making it one of the most successful dance productions in the world.
Document 15: Anne Yeats: Anne Butler Yeats (9 May 1919 – 4 July 2001) was an Irish painter and stage designer. She was a daughter of the poet William Butler Yeats and a niece of the painter Jack B. Yeats, niece of Lily Yeats, an embroiderer associated with the Celtic Revival, and botanic artist Elizabeth Yeats. Her brother Michael Yeats was a politician.
ground_truth: Riverdance