Question: Ernest Jones is part of a Jewelers group headquartered in which city ?

Context articles: Mervyn Jones (writer)
The International Journal of Psychoanalysis
Korea General Zinc Industry Group
Ernest Jones
Ernest Jones (retailer)
Datang Telecom Group
The Life and Work of Sigmund Freud
EMTEC
Signet Jewelers
Aventas group

Mervyn Jones (27 February 1922 – 23 February 2010) was a British novelist, journalist and biographer, the son of psychoanalyst Ernest Jones.
The International Journal of Psychoanalysis is an academic journal in the field of psychoanalysis.
 The idea of the journal was proposed by Ernest Jones in a letter to Sigmund Freud dated 7 December 1918.
 The journal itself was established in 1920, with Jones serving as editor until 1939, the year of Freud's death.
Korea General Zinc Industry Group (Chosongul: 조선아연공업총회사) is a North Korean mining and industrial group headquartered in Pyongyang.
 The group produces zinc, lead, base bullion, lead concentrates, zinc concentrates, cadmium, arsenic, zinc residues and copper concentrate for export and domestic use.
 The group imports some industrial and mining accessories, including industrial chemical reagents and animal feed.
Alfred Ernest Jones, FRCP, MRCS (1 January 1879 – 11 February 1958) was a British neurologist and psychoanalyst.
 A lifelong friend and colleague of Sigmund Freud from their first meeting in 1908, he became his official biographer.
 Jones was the first English-speaking practitioner of psychoanalysis and became its leading exponent in the English-speaking world.
 As President of both the International Psychoanalytical Association and the British Psycho-Analytical Society in the 1920s and 1930s, Jones exercised a formative influence in the establishment of its organizations, institutions and publications.
Ernest Jones is a British jeweller and watchmaker.
 Established in 1949, its first store was opened in Oxford Street, London.
 Ernest Jones specialises in diamonds and watches, stocking brands such as Gucci and Emporio Armani.
 Ernest Jones is part of the Signet Jewelers group.
Datang Telecom Group (officially Datang Telecom Technology & Industry Group) is a Chinese telecommunications equipment group headquartered in Beijing, China.
 The group was founded in September 1998 by the China Academy of Telecommunications Technology, which acted as the parent company of the group.
 It is best known for its leading role in developing the Chinese TD-SCDMA 3G mobile telecommunications standard through subsidiary DT Mobile (formerly known as Datang Mobile).
The Life and Work of Sigmund Freud is a biography of Sigmund Freud by Ernest Jones.
 The most famous and influential biography of Freud, "The Life and Work of Sigmund Freud" was originally published in three volumes (first volume 1953, second volume 1955, third volume 1957); a one-volume edition abridged by literary critics Lionel Trilling and Steven Marcus followed in 1961.
 When first published, "The Life and Work of Sigmund Freud" was acclaimed, and sales exceeded expectations.
 Although his biography has retained its status as a classic, Jones has been criticized for presenting an overly favorable image of Freud.
EMTEC is part of the Dexxon Group headquartered in Gennevilliers, France and markets consumer computer data storage products and other computer related consumables.
 Dexxon Group's North American subsidiary, Dexxon Digital Storage Inc. is located in Lewis Center, Ohio.
 EMTEC evolved from BASF Magnetics producing magnetic tapes.
 Between 1998 and 2002 all of BASF's cassette lineup (Ferro Extra, Chrome Extra and Chrome Super, along with the budget tapes Sound 1 and Sound 2) were rebranded EMTEC.
 While cassette manufacture has since ceased in 2005, and reel-to-reel tape operations were sold to RMGI, EMTEC continues to manufacture other recordable media such as optical discs, MiniDV and VHS cassettes, USB 2.0 and 3.0 Flash Drives.
 The Flash drives come in a variety of storage sizes.
 Distribution channels have decreased and EMTEC presence in the market is a shadow of its former BASF self.
 Since its sale by BASF, EMTEC has undergone several transformations.
Signet Jewelers Ltd. (Ratner Group 1949-1993 then Signet Group plc to September 2008) is the world's largest retailer of diamond jewelry.
 The company is domiciled in Bermuda and headquartered in Akron, Ohio, and is listed on the New York Stock Exchange.
 As of 14th march 2016 the company has been delisted from the London Stock Exchange, following reports that less than 1% of their annual trading volume was conducted via the platform.
 The group operates in the middle market jewelry segment and has number one positions in the U.S., Canada and UK speciality jewelry markets.
 Certain brands (Jared in the U.S. and H. Samuel/Ernest Jones/Leslie Davis in the UK) operate in the upper middle market.
 Signet Jewelers owns and operates the companies Zales, Kay Jewelers, and Jared.
The Aventas group, formerly the QUINN group, is a business group headquartered in Derrylin, County Fermanagh, Northern Ireland.
 The group has ventured into cement and concrete products, container glass, general insurance, radiators, plastics, hotels, and real estate.
 It was formed by Seán Quinn in 1973, developing from a small quarrying operation in Derrylin into a large organization, employing over 8,000 people in various locations throughout Europe.