Please answer the following question: Information:  - Joy Division were an English rock band formed in 1976 in Salford, Greater Manchester. Originally named Warsaw, the band consisted of singer Ian Curtis, guitarist and keyboardist Bernard Sumner, bass player Peter Hook, and drummer Stephen Morris.  - Factory Records was a Manchester-based British independent record label, started in 1978 by Tony Wilson and Alan Erasmus, which featured several prominent musical acts on its roster such as Joy Division, New Order, A Certain Ratio, The Durutti Column, Happy Mondays, Northside, and (briefly) Orchestral Manoeuvres in the Dark and James. Like the label 4AD Records, Factory Records used a creative team (most notably record producer Martin Hannett and graphic designer Peter Saville) which gave the label and the artists recording for it a particular sound and image. The label employed a unique cataloguing system that gave a number not just to its musical releases, but to artwork and other objects, as well.  - The British Broadcasting Corporation (BBC) is a British public service broadcaster. It is headquartered at Broadcasting House in London, is the world's oldest national broadcasting organisation, and is the largest broadcaster in the world by number of employees, with over 20,950 staff in total, of whom 16,672 are in public sector broadcasting; including part-time, flexible as well as fixed contract staff, the total number is 35,402.  - A Certain Ratio are an English post-punk band formed in 1977 in Wythenshawe, Manchester. While originally part of the punk rock movement, they soon added funk and dance elements to their sound.  - Anthony Howard "Tony" Wilson (20 February 1950  10 August 2007) was an English record label owner, radio and television presenter, nightclub manager, impresario and journalist for Granada Television and the BBC.  - The Durutti Column are an English post-punk band formed in 1978 in Manchester, England. The band is a project of guitarist and occasional pianist Vini Reilly who is often accompanied by Bruce Mitchell on drums and Keir Stewart on bass, keyboards and harmonica.  - Happy Mondays are an English alternative rock band from Salford, Greater Manchester. Formed in 1980, the band's original line-up was Shaun Ryder (vocals), his brother Paul Ryder (bass), Mark Day (guitar), Paul Davis (keyboard), and Gary Whelan (drums). Mark "Bez" Berry later joined the band onstage as a dancer/percussionist. Rowetta joined the band as a guest vocalist in 1990.  - Ad Infinitum were a musical group which were part of the Factory Records label . They were formed by Lindsay Reade , who was married to manager Tony Wilson at the time . They were composed of members of the Stockholm Monsters and New Order , bassist Peter Hook . Rather than continuing ad infinitum , the group only recorded one single `` Telstar '' , a cover of the Joe Meek song . It was released as a single , the B - side being `` Telstar in a Piano Bar '' . This single was the first record with a holographic cover .  - Alan Erasmus was the co-founder of Factory Records with Tony Wilson, which signed Joy Division and Happy Mondays. He also co-founded The Haçienda with Wilson, Rob Gretton and New Order, a famous Manchester nightclub which closed down in Summer 1997. As an actor, Erasmus appeared in several roles in the 1970s including ITV Playhouse and Play for Today, wherein he played minor roles.  - Peter Hook (born 13 February 1956) is an English singer, songwriter, composer, multi-instrumentalist and record producer. He is best known as the bassist and co-founder of English rock bands Joy Division and New Order.  - Manchester is a major city and metropolitan borough in Greater Manchester, England, with a population of 514,414 . It lies within the United Kingdom's second-most populous urban area, with a population of 2.55 million. Manchester is fringed by the Cheshire Plain to the south, the Pennines to the north and east and an arc of towns with which it forms a continuous conurbation. The local authority is Manchester City Council.    What entity does 'ad infinitum ' has the relation 'location of formation' with?
Answer:
manchester