Question: Who was the mother of the performer of Get Over You?

full_context: Document 1: 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 2: Off & On: "Off & On" is a pop song released by British recording artist Sophie Ellis-Bextor as the fifth overall single from her fourth studio album, "Make a Scene". It was released on 11 April 2011, exclusively in the Russian Federation as a digital download, a week before the release of the album there. Ellis-Bextor appeared on various talk shows in the United Kingdom to promote the song, including "The Rob Brydon Show", despite it not being released as a single there.
Document 3: 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 4: Mixed Up World: "Mixed Up World" is a song by British singer-songwriter Sophie Ellis-Bextor, released in 2003 as the first single from her second studio album, "Shoot from the Hip". It peaked at #7 on the UK Singles Chart. It was considered somewhat of a success. The single includes an easy-listening, chillout B-side, called "The Earth Shook the Devil's Hand". The video for the song features various dancers wearing a mix of bright and dark colours. It also features men in bowler hats as Sophie moves between giant black and white punctuation marks. It was directed by Rupert Jones. It was the first video that shows Sophie's blonde hairstyle. A short clip from the video was featured in an ad on Australia's VH1 channel in June 2006. "Mixed Up World" sold 35,000 copies in the United Kingdom.
Document 5: 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 6: 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.
Document 7: 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 8: 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 9: 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 10: Eileen Power: Eileen Power was the eldest daughter of a stockbroker and was born at Altrincham (now part of Greater Manchester) in 1889. She was a sister of Rhoda Power, the children's writer and broadcaster. When she was three her father, a stockbroker, was arrested for fraud and the family moved to Bournemouth. After her mother died of tuberculosis when Power was only 14, she moved to Oxford with her two sisters to live with her aunt. Power was educated at Oxford High School for Girls, Girton College, Cambridge, and the Sorbonne.
Document 11: 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 12: Read My Lips (Sophie Ellis-Bextor album): Read My Lips is the debut studio album by English singer Sophie Ellis-Bextor. It was released on 27 August 2001 by Polydor Records. After the disbandment of the Britpop group Theaudience, in which Ellis-Bextor served as vocalist, she was signed to Polydor. Prior to the LP's completion, the singer collaborated with several musicians, including band Blur's bassist Alex James, Moby and New Radicals frontman Gregg Alexander. The record was described as a collection of 1980s electronica and 1970s disco music.
Document 13: Starlight (Sophie Ellis-Bextor song): "Starlight" is a pop song released by British singer-songwriter Sophie Ellis-Bextor as the sixth overall single from her fourth studio album, "Make a Scene". It was released on 5 June 2011, in the United Kingdom as a digital download, a week before the release of the album. Ellis-Bextor appeared on various talk shows to promote the single prior to its release. The song also served as the lead single in Australia and Italy, released on 23 September 2011 a week ahead of the album release there. It's her first single as an independent artist with her label EBGB's.
Document 14: 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 15: 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.
ground_truth: Janet Ellis
sub_queries: Get Over You >> performer Answer: Sophie Ellis-Bextor
Which lady gave birth to Sophie Ellis-Bextor ? Answer: Janet Ellis