Question: The company that has bought Canal Digital in 2003 is headquartered in which city?

full_context: Document 1: Grameenphone: Grameenphone (Bengali: গ্রামীণফোন ) (DSE: GP, CSE: GP), widely abbreviated as GP, is the leading telecommunications service provider in Bangladesh. With more than 54.5 million subscribers and 46.3% subscriber market share (as of August 2016), Grameenphone is the largest mobile phone operator in the country. It is a joint venture between Telenor and Grameen Telecom Corporation, a non-profit sister concern of the microfinance organisation and community development bank Grameen Bank. Telenor, the largest telecommunications company in Norway, owns a 55.8% share of Grameenphone, Grameen Telecom owns 34.2% and the remaining 10% is publicly held.
Document 2: SF Anytime: SF Anytime is a video on demand service owned by Bonnier available in Denmark, Finland, Norway and Sweden and primarily offering movies. It was launched in 2002 and was then only available on the Internet. In January 2005, the service was launched on the IPTV platform Telia Digital-tv. Other IPTV distributors, such as Canal Digital, Bredbandsbolaget and FastTV soon followed.
Document 3: BT Group: BT Group plc (trading as BT) is a holding company which owns British Telecommunications plc, a British multinational telecommunications company with head offices in London, United Kingdom. It has operations in around 180 countries and is the largest provider of fixed-line, mobile and broadband services in the UK, and also provides subscription television and IT services.
Document 4: Vodafone: Vodafone Group plc is a British multinational telecommunications company, with headquarters in London. It predominantly operates services in the regions of Asia, Africa, Europe, and Oceania.
Document 5: TVNorge HD: TVNorge HD is a High Definition television channel in Norway. The channel is a joint venture by TVNorge and cable and satellite-TV distributor Canal Digital which started broadcasting on October 3, 2008. It's the first Norwegian high definition channel, but currently only some of its contents is available in HD (HBO shows like Rome and other American series like ). The HD station, has the same schedule as the SD station. Broadcasts not available in high definition will be broadcast in standard definition.
Document 6: Kiosk (TV): Kiosk was a Scandinavian pay-per-view service available on Canal Digital's satellite platform and owned by Canal+. Kiosk showed feature films before they had their pay-TV premiere on Canal+. Kiosk ceased its operations on January 3, 2007.
Document 7: AT&amp;T: AT&T Inc. is an American multinational telecommunications conglomerate, headquartered at Whitacre Tower in downtown Dallas, Texas. AT&T is the world's largest telecommunications company. AT&T is the second largest provider of mobile telephone services and the largest provider of fixed telephone services in the United States, and also provides broadband subscription television services through DirecTV; combined with AT&T's legacy U-verse service, this also makes AT&T the largest pay television operator. AT&T is the second-largest company in Texas, behind ExxonMobil. s of February 2017 , AT&T is the 12th largest company in the world (non-oil and overall) as measured by a composite of revenues, profits, assets and market valuation. AT&T is the largest telecommunications company in the world by revenue. s of 2017 , it is also the 18th-largest mobile telecom operator in the world, with 134 million mobile customers. AT&T was ranked at #4 on the 2017 rankings of the world's most valuable brands published by Brand Finance.
Document 8: Discovery Communications Nordic: Discovery Communications Nordic (formerly Discovery Networks Nordic and SBS Discovery Media) is a branch of Discovery Networks Northern Europe, a part of Discovery Networks EMEA. Headquartered in Copenhagen, Denmark, the company represents Discovery Communications' operations in Denmark, Finland, Norway and Sweden.
Document 9: Canal Digital: Canal Digital is a Nordic pay TV and internet service provider in Norway, Sweden, Denmark and Finland that was founded in March 1997 as a joint venture between the French pay TV company Canal+ and the Norwegian telecommunications operator Telenor. Since 2003, Canal Digital is fully owned by Telenor.
Document 10: Telenor: Telenor Group (; ] or ] ) is a Norwegian mostly government-owned multinational telecommunications company headquartered at Fornebu in Bærum, close to Oslo. It is one of the world's largest mobile telecommunications companies with operations in Scandinavia, Eastern Europe and Asia. It has extensive broadband and TV distribution operations in four Nordic countries, and a 10-year-old research and business line for Machine-to-Machine technology. Telenor owns networks in 13 countries, and has operations in 29 countries if their 33% ownership in VimpelCom Ltd is included.
Document 11: Telenor Avidi: Telenor Avidi AS was a subsidiary of Telenor Plus Holdings AS which is 100% owned by the Norwegian telecommunications company Telenor ASA. The company has now been merged with Telenor's cable and satellite television subsidiary Canal Digital. Telenor Avidi was the largest provider of cable television in Norway.
Document 12: CTV (pay television): CTV was an analogue pay television package, available in Scandinavia. It was mostly using Norwegian satellites such as Thor 1 and Intelsat 707 to broadcast basic channels to Scandinavian homes, using the D2-MAC transmission system. CTV was operated by Telenor, who in 1997 joined forces with Multichoice (owned by Canal+) to launch the Canal Digital platform. Most of the CTV channels were closed down in September 2001.
Document 13: Ooredoo Oman: Ooredoo Oman (formerly Nawras) is an Omani telecommunications company owned by Ooredoo (formerly the Qtel Group). It is the Sultanate’s first privately owned telecommunications company, and serves two million customers as of August 2010. It sells voice and data services over, among others, 2.75G, 3G+, WiMAX and fibre. Since 2010, it has been listed at the Muscat Securities Market, and is the fourth largest telecom company by market capitalisation.
Document 14: ENEA AB: Enea develops and delivers software and expert services for companies that develop communication-intensive products for the connected society. As a vendor of real-time operating systems to the world's largest Tier-1 telecom equipment manufacturers (TEMs) and network equipment manufacturers (NEPs), Enea has decades' worth of experience from mobile infrastructure and the real-time domain. Enea, which is an abbreviation of "Engmans Elektronik Aktiebolag", is producing the operating system OSE (Operating System Embedded). Enea is global information technology company with its headquarters in Kista, Sweden
Document 15: PlusTV: PlusTV was a Finnish digital terrestrial television distributor owned by Finnish telecommunications company DNA. It is one of two pay television distributors in the Finnish terrestrial network, the other being Canal Digital.
ground_truth: Fornebu