Question: Which cast member of the drama Bolero at times used the pseudonym Billie Beck?

Context paragraphs:
Zhang Jun (prince): Zhang Jun (張駿) (307–346), courtesy name Gongting (公庭), formally Duke Zhongcheng of Xiping (西平忠成公, posthumous name given by Jin Dynasty (265-420)) or Duke Wen of Xiping (西平文公, posthumous name used internally in Former Liang) was a ruler of the Chinese state Former Liang.  During his reign, he at times used the Jin-created title of Duke of Xiping, but when forced to submit to Han Zhao and Later Zhao, he used the title Prince of Liang.  Late in his reign, even when not under Later Zhao's pressure, he claimed the title of "Acting Prince of Liang."  During the brief reign of his son Zhang Zuo, he was honored as Prince Wen of Liang (涼文王).

Geordie Shore (series 8): The eighth series of Geordie Shore, a British television programme based in Newcastle upon Tyne was confirmed in October 2013 after cast member Holly Hagan announced it on Twitter and is expected to air 22 July 2014.  Filming began for this series on 25 March 2014.  This series will be the first not to feature former cast member Sophie Kasaei after she was axed during the seventh series following a racial slur.  All other cast members from the previous series return with the addition of new cast member Aaron Chalmers who had briefly appeared during series two of the show as a one-night stand of Holly's.  In May 2014, Gaz announced that the series would begin in July.  An exclusive first trailer for the series was released during an episode of Ex On The Beach on 3 June 2014.  It was revealed on 10 June 2014 that another new cast member had joined, 21-year-old Kyle Christie.

Sally Rand: Sally Rand (April 3, 1904 – August 31, 1979) was a burlesque dancer, vedette and actress, most noted for her ostrich feather fan dance and balloon bubble dance.  She also performed under the name Billie Beck.

List of previous General Hospital cast members: "General Hospital" is the longest running American television serial drama, airing on ABC.  Created by Frank and Doris Hursley, the series premiered on April 1, 1963.  Former cast member Rachel Ames was previously the series' longest-running cast member, portraying Audrey Hardy from 1964 to 2007, and making guest appearances in 2009 and 2013, the latter for the series' fiftieth anniversary.  Ames made a special appearance on October 30, 2015.  Anthony Geary, who has portrayed Luke Spencer, was the fourth longest-running cast member, having joined "General Hospital" in November 1978.  Geary left the show on July 27, 2015.  This is a list of former, notable guest appearances, and deceased cast members.

Days of Our Lives cast members: "Days of Our Lives" is a long-running American television soap opera drama, airing on NBC.  Created by Ted and Betty Corday, the series premiered on November 8, 1965.  The longest-running cast member is Suzanne Rogers, who has portrayed Maggie Horton since August 20, 1973, making her one of the longest-tenured actors in American soap operas.  Original cast member, Frances Reid, was previously the soap's longest-running cast member, portraying Horton family matriarch, Alice Horton, from 1965 to 2007.  Actresses Susan Seaforth Hayes and Deidre Hall, who portray Julie Olson Williams and Dr. Marlena Evans, are currently the second and third longest tenured actors on "Days of Our Lives", joining in 1968 and 1976, respectively.  The following list is of cast members who are currently on the show: the main and recurring cast members, or those who are debuting, departing or returning to the series.

Bolero (1934 film): Bolero is a 1934 American pre-Code musical drama film starring George Raft and Carole Lombard, and directed by Wesley Ruggles.  The movie was a rare chance for Raft to star and to play a dancer, which had been his profession in New York City, rather than portraying a gangster.  The film takes its title from the Maurice Ravel composition "Boléro" (1928).  The supporting cast features William Frawley, Ray Milland, and Sally Rand.

The Only Way Is Essex (series 18): The eighteenth series of the British semi-reality television programme "The Only Way Is Essex" was confirmed on 3 June 2015 when it was announced that it had renewed for at least a further six series, taking it up to 21 series.  It is the third series to be included in its current contract.  The series launched on 17 July 2016 with a "The Only Way is Mallorca" special.  Ahead of the series it was announced that cast member Jake Hall had quit the show having appeared since the fourteenth series.  Despite quitting the show at the end of the sixteenth series, Jess Wright made a one-off appearance to support Bobby over the loss of his dog.  It was also the first series not to include long-running cast member Lewis Bloor, who quit during the previous series.  New cast member Amber Dowding joined the show for this series. " Love Island" winners Nathan Massey and Cara De La Hoyde also made guest appearances during the ninth episode of the series.  This was the final series to include Billie Faiers after it was announced she had quit the show.

The Only Way Is Essex (series 19): The nineteen series of the British reality television programme "The Only Way Is Essex" was confirmed on 3 June 2015 when it was announced that it had renewed for at least a further six series, taking it up to 21 series.  It is the fourth series to be included in its current contract.  The series will launch on 9 October 2016 with a "The Only Way is Marbs" special.  Ahead of the series it was confirmed that former cast member Lauren Goodger would be making her return to the series having previously appeared during the first to the sixth series, and then again during the 2015 Essexmas special.  This is the first series not to include Billie Faiers, after it was announced she had quit the show.  It includes the first appearances of new cast members Ben Shenel and Ercan Ramadan.  Mario Falcone and Frankie Essex also made a surprise one-off return to the series during the final episode of the series to celebrate Chloe Sims's 35th birthday. " Love Island" winners Nathan Massey and Cara De La Hoyde both made another guest appearance during the eighth episode.  Original cast member James Argent was also absent for most of this series due to him taking a break from the show.  A further two Essexmas specials aired in December 2016, where Danni Armstrong announced her departure from the series.

General Hospital cast members: "General Hospital" is the longest running American television serial drama, airing on ABC.  Created by Frank and Doris Hursley, the series premiered on April 1, 1963.  The longest-running cast member is Leslie Charleson, who has portrayed Dr. Monica Quartermaine since August 17, 1977, also making her one of the longest-tenured actors in American soap operas.  Former cast member Rachel Ames was previously the series' longest-running cast member, portraying Audrey Hardy from 1964 to 2007, and making guest appearances in 2009 and 2013, the latter for the series' fiftieth anniversary.  Ames made a special appearance on October 30, 2015.  Actors Genie Francis and Kin Shriner, who portray Laura Spencer and Scott Baldwin, are the second and third longest-running cast members, having joined "General Hospital" in February and August 1977, respectively.  Actress Jacklyn Zeman — who portrays Bobbie Spencer — is the fourth longest-running cast member, joining the serial in December 1977.  Actress Jane Elliot, who joined the serial in June 1978 as Tracy Quartermaine, is the fifth longest-running cast member, joining "General Hospital" in June 1978 until her departure in May 2017.  Former cast member Anthony Geary, who portrayed Luke Spencer, was the sixth longest-running cast member, having joined "General Hospital" in November 1978.  The following list is of cast members who are currently on the show: the main and recurring cast members, or those who are debuting, departing or returning to the series.

Ellen Cleghorne: Ellen Cleghorne (born November 29, 1965) is an American actress and comedian, best known as a cast member of "Saturday Night Live" from 1991 to 1995.  Cleghorne was the sketch comedy show's second African-American female repertory cast member, succeeding Danitra Vance in its eleventh season, and the first African-American female cast member to stay for more than one season.  She returned for its 40th anniversary special on February 15, 2015.  Cleghorne was ranked the 69th greatest "Saturday Night Live" cast member by "Rolling Stone" magazine.

Supporting paragraphs: Bolero (1934 film) Sally Rand
Answer: Sally Rand