Question: Which lady gave birth to the performer of If I Can't Dance?

full_context: Document 1: Jess Glynne: Jess Glynne was born in Hampstead and raised in Muswell Hill, North London, in a Jewish family. Her father, Laurence Glynne, is an estate agent; and her mother, Alexandra (née Ingram), worked in A&R in the music industry. The family name was originally Goldstein, but her grandfather changed it to Glynne. She applied for the television show "The X Factor" when she was 15 years old, but dropped out of the audition process following a disagreement with the producers. She attended Rhodes Avenue Primary School, then attended Fortismere School, where she completed her A-levels in 2008, and took various jobs at a boutique, a fitness centre and a hairdresser's. After a period spent travelling the world, Glynne worked for a music management company in her late teens and began networking with songwriters and producers, eventually honing her artistry for four years.
Document 2: Sophie Ellis-Bextor: Ellis-Bextor was born in London to Janet Ellis, who was later a presenter on BBC's children's television programmes "Blue Peter" and "Jigsaw", and Robin Bextor, a film producer and director: they separated when she was four. As a child, Ellis-Bextor occasionally appeared on "Blue Peter" alongside her mother, who presented the programme.
Document 3: Get Over You / Move This Mountain: "Get Over You" and "Move This Mountain" are two songs recorded by British pop singer Sophie Ellis-Bextor. In most countries, "Get Over You" was released as the sole single, but in the United Kingdom, the two tracks were released as a double A-side single on 10 June 2002. The former track was taken off the "Read My Lips" album reissue, while the latter was an album track in the original album release.
Document 4: Make a Scene: Make a Scene is the fourth studio album by English singer and songwriter Sophie Ellis-Bextor, released in Russia on 18 April 2011 by Universal Music Group and in the United Kingdom on 13 June 2011 by Ellis-Bextor's own record label, EBGB's. It is her first studio album since "Trip the Light Fantastic" (2007).
Document 5: I'm Not a Girl, Not Yet a Woman: "I'm Not a Girl, Not Yet a Woman" is a song recorded by American singer Britney Spears for her third studio album, Britney (2001). It was written and produced by Max Martin and Rami, with additional writing from Dido. The song was released on February 18, 2002, by Jive Records. In the United States and Canada, the song was released as the second single from her third studio album Britney; internationally, it served as the third. "I'm Not a Girl, Not Yet a Woman" is a song that speaks about the angst and heartache of adolescence. Spears considered the song inspirational and one of her favorite songs to perform.
Document 6: Dance in the Dark: "Dance in the Dark" is a song by American recording artist Lady Gaga, from her third EP, "The Fame Monster". Inspired by Gaga's "Fear of Self Monster", the song deals with the intimate experience between two people alone in a bedroom. According to Gaga, the record is about a girl who likes to have sex with the lights off because she is embarrassed about her body. She explained that she came across such women while working on the MAC AIDS Fund, and that the song is not about freedom, but rather the assurance that Gaga understood their feelings. The song was initially planned to be released after "Telephone", but due to a dispute between Gaga and her record company, "Alejandro" was released instead. It was later released as a digital download and radio-only single in Australia, Belgium, and France.
Document 7: Laura Bates: Bates was born on 27 August 1986 in Oxford to a mother who taught French and a physician father, and grew up in Hackney and Taunton, and has an older sister and a younger brother. Her parents divorced when Bates was in her twenties. She read English literature at St John's College, Cambridge, and graduated from the University of Cambridge in 2007. Bates remained in Cambridge for two and a half years as a researcher for the psychologist Susan Quilliam who was working on an updated edition of The Joy of Sex.
Document 8: Catch You: "Catch You" is a song by the British recording artist Sophie Ellis-Bextor for her third album, "Trip the Light Fantastic" (2007). It was written by Cathy Dennis, Rhys Barker and Greg Kurstin and produced by Kurstin. It was released as the album's first single on 19 February 2007. "Catch You" is a pop rock song and talks about Bextor chasing the guy that she wants.
Document 9: Juno Temple: Temple was born in Hammersmith, London, the daughter of producer Amanda Pirie and film director Julien Temple. Her aunt is politician Nina Temple. She grew up in Taunton, Somerset, and attended Enmore Primary School, Bedales School, and King's College, Taunton. She has two younger brothers: Leo and Felix.
Document 10: Samantha Bee: Bee was born in Toronto, Ontario, the daughter of Debra and Ronald Bee. She has said of her family: "Dating from well before the turn of the 20th century, if there has ever been a successful, happy marriage in my family lineage, I've yet to hear about it." Bee's parents split up soon after her birth, and she was initially raised by her grandmother, who worked as a secretary at the Catholic school Bee attended, on Roncesvalles Avenue during her childhood. She attended Humberside Collegiate Institute and York Memorial Collegiate Institute.
Document 11: India Jane Birley: Born in London, she is the daughter of Lady Annabel Vane-Tempest-Stewart, from her marriage to nightclub mogul Mark Birley. She has two brothers, Rupert (presumed deceased) and Robin; and three half-siblings, Zac, Jemima, and Ben Goldsmith from her mother's affair with James Goldsmith, the man who would become her second husband.
Document 12: Me and My Imagination: "Me and My Imagination" is a song by British recording artist Sophie Ellis-Bextor for her third studio album, "Trip the Light Fantastic" (2007). It was written by Ellis-Bextor, Hannah Robinson and co-written and produced by Matt Prime. It is a dance-pop, disco song and its lyrics advise an overeager suitor to play harder to get. Some critics noted that it recalls the songs from her first studio album, "Read My Lips" (2001).
Document 13: If I Can't Dance: "If I Can't Dance" is a song by British recording artist Sophie Ellis-Bextor for her third studio album, "Trip the Light Fantastic" (2007). It was written by Ellis-Bextor and Dimitri Tikovoi, while production was handled by Tikovi, with additional production by Brio Taliaferro and Jeremy Wheatley. It is a dance-pop, electropop and disco song and a reference to the famous misquotation of Emma Goldman, "If I can't dance, I don't want to be part of your revolution", which nevertheless summarizes what she did say.
Document 14: Groovejet (If This Ain't Love): "Groovejet (If This Ain't Love)" is a song by Italian electronic music producer Spiller, featuring vocals from British singer and songwriter Sophie Ellis-Bextor. The single was released in August 2000 by Positiva Records. It peaked at number one in the UK, New Zealand, Ireland and Australia, as well as charting at number three on the American Hot Dance Chart. On 15 September 2000, the song was certified gold record status by the British Phonographic Industry, and was certified platinum on 22 July 2013. Various versions of the single were later featured on the German reissue and some UK editions of Ellis-Bextor's debut solo album, "Read My Lips".
Document 15: Nicola Roberts: Roberts was born in Stamford, Lincolnshire, when her mother was 17. At the time of her birth, her father was working for the RAF and the resulting pay led to financial struggles which saw her father move to work for Ford Motor Company whilst her mother became a photographer to help the family monetary problems. Roberts grew up in Runcorn, Cheshire.
ground_truth: Janet Ellis
sub_queries: If I Can't Dance >> performer Answer: Sophie Ellis-Bextor
Which lady gave birth to Sophie Ellis-Bextor ? Answer: Janet Ellis