Question: Who is the mother of the producer of the album Circus Live?

full_context: Document 1: Little Box of Horrors: The box set contains all four full-length releases by the band, all with their original artwork (American version). It also contains a fifth disc, entitled "Rare Treats", which features demo versions of many songs, as well as other rare songs by the band. The American release is accompanied by a DVD, entitled "The Transvestite Chainsaw Massacre: Live '98", which features footage of 9 songs performed live at Ground Zero, in Spartanburg, South Carolina, in 1998.
Document 2: John Cale: John Davies Cale was born on 9 March 1942 in Garnant in the industrial Amman Valley of Wales to Will Cale, a coal miner, and Margaret Davies, a primary school teacher. Although his father spoke only English, his mother spoke and taught Welsh to Cale, which hindered his relationship with his father, although he began learning English at primary school, at around the age of seven. Cale was molested by two different men during his youth, an Anglican priest who molested him in a church and a music teacher.
Document 3: Live in California 74: Live in California 74 is a live DVD of the first California Jam concert performance from Deep Purple released in 2005. It was recorded and aired live by ABC-TV on 6 April 1974 at the Ontario Speedway near Los Angeles, California. This concert was one of the first ever music concerts issued on videotape and laser disc in 1981 under the title "California Jam" in Japan and the UK.
Document 4: Live at Rockpalast (John Cale album): Live at Rockpalast is a two-disc live album by Welsh musician John Cale. It was released in October 2010 on German record label Made in Germany. It was recorded during his two shows for German music television show Rockpalast on 14 October 1984 at Grugahalle, Essen (first disc; with full band) and 6 March 1983 at Zeche, Bochum (second disc; Cale solo with guitar and piano). This concert is missing "Risé, Sam And Rimsky-Korsakov" (Cale, Shepard) narrated by his then-wife Risé Irushalmi.
Document 5: Ed Sheeran: Sheeran was born in Halifax, West Yorkshire on 17 February 1991. When he was a child, he moved with his family from Hebden Bridge to Framlingham in Suffolk. He has an older brother named Matthew who works as a composer. Sheeran's parents, John and Imogen, are from London. His paternal grandparents are Irish, and Sheeran has stated that his father is from a "very large" Catholic family. John is an art curator and lecturer, and Imogen is a culture publicist turned jewellery designer. His parents ran Sheeran Lock, an independent art consultancy, from 1990 to 2010.Sheeran sang in a local church choir from the age of four, learned to play the guitar during his time at Rishworth School, and began writing songs while at Thomas Mills High School in Framlingham. He was accepted at the National Youth Theatre in London as a teenager. He successfully auditioned for Youth Music Theatre UK in 2007 and joined their production of Frankenstein in Plymouth. He is a patron of Youth Music Theatre UK (now renamed British Youth Music Theatre) and of Access to Music, where he studied Artist Development. Sheeran is a second cousin of Northern Irish broadcaster Gordon Burns, who hosted the British game show The Krypton Factor.
Document 6: Circus Live: Circus Live is a 3-disc live album by John Cale released on February 19, 2007. The contents were recorded live on the 2004 and 2006 European tours. One of the discs is a DVD containing rehearsal footage, a music video, and a two audio tracks.
Document 7: Kenton Cool: Cool was born in Slough, Berkshire in 1973. His family surname was originally Kuhle and was changed during the Second World War by his half-German grandfather. His father was a photographer and his mother a florist, and the family home was near to Uxbridge, in Middlesex. He was schooled at John Hampden Grammar School in High Wycombe, and later obtained a place at the University of Leeds. Kenton Cool graduated from the University of Leeds in 1994 after studying BSc Geological Sciences.
Document 8: Idwal Robling: Robling was born in Ynyshir in the Rhondda Valley, where he attended the local grammar school. His education was interrupted by the Second World War, and upon being called up was accepted for service in the Royal Navy. However, he was selected by ballot to become a Bevin Boy so instead of going to the Navy he was conscripted to work in the coal mines. After the war, he resumed his education and qualified as a teacher after attending Caerleon College and Loughborough University, although instead of teaching he decided on a different career and became a manager at the Lovell's sweet factory in Newport, Monmouthshire.
Document 9: Extra Playful: Extra Playful is a 2011 EP by John Cale. The EP features 5 previously unreleased songs. Black Edition (released on Black Friday) contains two more extra songs.
Document 10: Crooked Rain, Crooked Rain: The album was reissued on October 26, 2004 by Matador Records under the name "". The re-released version contains two discs: the first is the original album as well as B-sides and compilation tracks from that era. The second disc is a collection of previously unreleased tracks featuring former drummer Gary Young and live BBC Sessions. The collection features forty-nine tracks, culled from various previous recordings, including the original album, the single "Cut Your Hair", "Range Life", "Gold Soundz", the "Gold Soundz" Australia-N.Z. French Micronesia Tour '94 EP, the "Crooked Rain, Crooked Rain" bonus 7", and other recording sessions at Random Falls, NY, Louder Than You Think in Stockton, CA, and Waterworks, NY over the course of 1993.
Document 11: Hywel Teifi Edwards: Born and raised in Aberarth, Ceredigion, Edwards attended Aberaeron Grammar School and the University College of Wales, Aberystwyth. He taught Welsh at Garw Grammar School, Pontycymmer, where he met his wife Aerona, before becoming an extramural lecturer in Welsh literature at University of Wales, Swansea, and later Professor and Head of the Welsh Department. He and his wife had two children, Huw Edwards and Meinir Edwards now Menir Krishnasamy. He retired from full-time teaching in 1995 but continued to lecture and write books. Edwards was the leading authority on the history of the National Eisteddfod of Wales.
Document 12: Roger Waters: Waters was born on 6 September 1943, the younger of two boys, to Mary (née Whyte; 1913–2009) and Eric Fletcher Waters (1914–1944), in Great Bookham, Surrey. His father, the son of a coal miner and Labour Party activist, was a schoolteacher, a devout Christian, and a Communist Party member. In the early years of the Second World War, Waters' father was a conscientious objector who drove an ambulance during the Blitz.
Document 13: Zombie Live: Zombie Live is the first live album from heavy metal artist Rob Zombie. The CD was recorded over several nights during the band's "Educated Horses" tour and was said to include a 36-page super-deluxe book of never-before-seen live pictures and a DVD of live footage and animated videos. After the release of the album no artbook or DVD were included with the release of the album. Blabbermouth.net reported that the DVD companion would be available in spring 2008, but this still has yet to surface. A different concert film, "The Zombie Horror Picture Show", was released in 2014.
Document 14: Gwynfor Evans: Gwynfor Evans was born in Barry, near Cardiff, to Dan Evans and Catherine Richard. He had a brother named Alcwyn, and a sister named Ceridwen. His father ran a chain of shops in Barry, and his mother a china shop. His mother was a fluent Welsh speaker. As a boy, he was educated at Gladstone Road School. Later on he was educated at Barry County School, where he was captain of the school's cricket and hockey teams. At the school he began learning the Welsh language, but did not become fully fluent until the age of seventeen.
Document 15: Fragments of a Rainy Season: Fragments of a Rainy Season is a 1992 live solo album by John Cale, performed at various locations during his 1992 tour. A 16-track DVD, recorded at the Centre for Fine Arts, Brussels (Palais des Beaux-Arts, now BOZAR) in Brussels, Belgium, that features the tracks in the order in which they were performed, was also released. The album cover was designed by noted conceptual artist Joseph Kosuth.
ground_truth: Margaret Davies
sub_queries: Circus Live >> producer Answer: John Cale
Who is the mother of John Cale ? Answer: Margaret Davies