Question: Sian Evans was known for being a Front woman and singer-songwriter of a band based in which city ?

Context paragraphs:
Jessicka: Jessicka Addams (born Jessica Fodera) is an American singer and artist.  Best known by her stage name Jessicka, she was the front woman of Florida-based band Jack Off Jill and current front for the Los Angeles-based band Scarling.

Sian Evans: Sian Evans (born 9 October 1971) is a Welsh singer.  Throughout the 2000s, she was known for being a Front woman and singer-songwriter of the band Kosheen, a trip-hop/drum'n’bass group that, during that decade, placed two albums within the Top Ten of the UK Albums Chart.  She has also joined a list of Welsh artists to have topped the UK singles chart with collaboration on the track 'Louder' with DJ Fresh.

Kosheen: Kosheen are a British electronic music group based in Bristol, United Kingdom.  The group consists of Welsh singer-songwriter Sian Evans (born 9 October 1971, Caerphilly), songwriter-producer Markee Ledge (born Mark Davies, 1974, Springburn, Glasgow) and Darren Decoder (born Darren Beale, 1974, Bristol).  The name Kosheen derives from the name of a North American Apache Warrior, Cochise.  When in Japan, it was discovered that a combination of the Japanese words for "old" (古, romanized transliteration 'ko') and "new" (新, 'shin') would make 'Kosheen' in Japanese.

Juliet Simms: Juliet Nicole Simms (born February 26, 1986) is an American singer-songwriter and former front woman of the band Automatic Loveletter.  She came in second place in the second season of "The Voice".

Erocktica: Erocktica was an American rock band which described itself as An Anti-Censorship Erotic Theatrical Musical Free Expression Rock Extravaganza.  Erocktika last performed in 2010.  The band broke up after front woman, Pink Snow, left New York City to attend law school in Massachusetts.  Snow died of a heart attack in November 2012.

Leah Song: Leah Song (born Leah Smith) is a singer-songwriter, multi-instrumental musician, storyteller, poet, and activist known her role as front woman in Rising Appalachia, with her sister Chloe Smith, incorporating sultry vocals, rhythm, banjo, guitar, ballads, dance, spoken-word and storytelling into her work.  Her music is based in the traditions of Southern soul and international roots music.

Jamie Pineda: Jamie Irene Pineda (born September 27, 1988) is an American pop singer-songwriter and former model.  In late 2007, Pineda signed on to be the front woman of the international pop music project Sweetbox staying with the group until 2012.  In 2013, she took part in third season of the American music competition series "The X Factor".

Sarah McLeod (musician): Sarah Yvette McLeod (born 1 February 1973) is an Australian singer-songwriter/guitar player and front woman of rock band, The Superjesus.  The group won three ARIA Music Awards and they shipped over 300,000 units during their career.  McLeod's debut solo album, "Beauty Was a Tiger", was released in September 2005 and peaked in the top 40 on the ARIA Albums Chart.  The album's first single, "Private School Kid" , a duet with The Living End's Chris Cheney (July 2005) also reached the top 40, on the related ARIA Singles Chart.  In October 2007 McLeod was described as an "iconic Aussie rock chick" by Alison Stieven-Taylor.

Abhaya Subba: Abhaya Subba (Nepali: अभाय सुब्बा ) is a Nepalese singer-songwriter and musician, best known as the front woman of the rock band Abhaya & the Steam Injuns.  She is a former RJ of Times FM and Hits FM, and is famous for her progressive music and social initiatives.

Camille Berthomier: Camille Berthomier (born 24 December 1984), known professionally as Jehnny Beth, is a French musician, vocalist, singer-songwriter and actress best known as half of a French lo-fi duo John & Jehn and front woman of the English rock band Savages.

Supporting paragraphs: Sian Evans Kosheen
Answer: Bristol