Question: Metro Broadcast s a wholly owned subsidiary of a company that has its executive office in which city ?
Context: The Johnsonburg, Kane, Warren and Irvine Railroad (reporting mark JKWI) was a railroad company in Pennsylvania, United States, formed on May 24, 1982, by Sloan Cornell who also owned the Knox and Kane Railroad.  The JKWI was the designated operator of the Irvine, Warren, Kane & Johnsonburg Railroad, that was a partnership of Brock Railroad (a wholly owned subsidiary of Warren Car Company), Irvine Railroad (a wholly owned subsidiary of National Forge Company) and Struthers Wells Inter-American Corporation (a subsidiary of Struthers Wells), all three being Pennsylvania corporations, and had acquired from Conrail the following railroad line segments: MP 58.52 to MP 66.7 (Irvine to Warren) and MP 92.5 to MP 111.0 (Kane to Johnsonburg). John Hancock Financial is an informal term for a United States insurance company which existed, in various forms, from its founding on April 21, 1862, until its acquisition in 2004 by the Canadian insurance company Manulife Financial.  It was named in honor of John Hancock, a prominent Patriot.  The company continues to operate as a wholly owned subsidiary of Manulife and its headquarters remains in Boston, Massachusetts.  John Hancock Financial Network (JHFN) is the retail distribution company of John Hancock Life Insurance Company, U.S.A., which is a wholly owned subsidiary of Manulife Financial Corporation. The Murrin Murrin Joint Venture is a major nickel-cobalt mining operation being conducted in the North Eastern Goldfields, approximately 45 km east of Leonora, Western Australia.  The Project was a joint venture between Murrin Murrin Holdings Pty Ltd, a wholly owned subsidiary of Minara Resources Ltd (whose share is 60%) and Glenmurrin Pty Ltd, a wholly owned subsidiary of Glencore International AG, which had a 40% share but also owned 70% of Minara.  As of November 2011, Minara Resources was fully acquired and is now wholly owned by Glencore International.  The mine opened in 1999. WPP plc, (Wire and Plastic Products) is a British multinational advertising and public relations company with its main management office in London, England, and its executive office in Dublin, Ireland.  It owns a number of advertising, public relations and market research networks, including IMRB, Millward Brown, Grey, Burson-Marsteller, Hill & Knowlton, JWT, Ogilvy & Mather, TNS, Young & Rubicam and Cohn & Wolfe. Millennium Pharmaceuticals, Inc., The Takeda Oncology Company was a leading biopharmaceutical company based in Cambridge, Massachusetts.  Millennium has gradually been absorbed by its parent Takeda and renamed Takeda Oncology.  The Company marketed Velcade (bortezomib) for injection, a cancer product, and has a growing clinical development pipeline of product candidates.  Millennium's research, development and commercialization activities focused in two therapeutic areas: oncology and inflammation.  By applying its knowledge of the human genome, understanding of disease mechanisms and industrialized drug discovery platform, Millennium developed a line of new product candidates.  It was one of the first companies to systematically search for genes linked to disease, but none of the drugs which it is marketing or has in clinical trial, with one partial exception, have been the results of that research.  On May 14, 2008, Japanese company Takeda Pharmaceutical announced the completion of its acquisition of Millennium for US$25.00 per share in cash—a deal worth $8.8 billion.  Takeda completed the acquisition through a tender offer and subsequent merger of a wholly owned subsidiary of Takeda into Millennium.  Millennium is now a wholly owned subsidiary of Takeda. Fuqi International (formerly traded as NASDAQ: FUQI ) is a designer of precious metal (gold and platinum) jewelry for the luxury goods market in China.  It also manufactures jewelry items that contain diamonds and other precious stones on a custom-order basis.  Fuqi is a Delaware corporation with its principal executive office located in Shenzen, China.  Fuqi operates through its wholly owned subsidiary, Fuqi International Holdings Co., Ltd., a British Virgin Islands corporation and its wholly owned subsidiary, Shenzhen Fuqi Jewelry Co., Ltd., a company established under the laws of China. Braun GmbH ( ; ] ), formerly Braun AG, is a German consumer products company based in Kronberg.  From 1984 until 2007, Braun was a wholly owned subsidiary of The Gillette Company, which had purchased a controlling interest in the company in 1967.  Braun is now a wholly owned subsidiary of Procter & Gamble, which acquired Gillette in 2005.  On 16 April 2012, De'Longhi bought perpetual rights to manufacture Braun branded products from Procter & Gamble in the small appliance segment.  Procter & Gamble will continue to own the Braun brand. Sun Hung Kai Financial Limited (SHKFL), is a 70%-owned subsidiary of Everbright Securities Company Limited (SSE: 601788, HKEX: 6178, “Everbright Securities”).  With its foundation dating back to 1969 when Fung King Hey, Kwok Tak Seng and Lee Shau Kee teamed up to start the Sun Hung Kai partnership, SHKFL was a wholly owned subsidiary of Sun Hung Kai & Co. Limited (SEHK: 86,　“SHKCO”).  SHKCO is chaired by Lee Seng Huang and controlled by the Lee & Lee Trust following the acquisition of the Fung family’s equity interest in the company by Allied Properties (H.K.) Limited via its wholly owned subsidiary in 1996.  In June 2015, Everbright Securities acquired 70% of SHKFL from SHKCO, making SHKFL a subsidiary of Everbright Securities since then.  SHKCO remains a 30% shareholder of SHKFL. Metro Broadcast Ltd. is a UK-based corporate event supplier with its Head Office in London and a satellite operation in Scotland with offices in Edinburgh, Glasgow and Aberdeen.  The company is a wholly owned subsidiary of WPP plc. Copperweld Corp. v. Independence Tube Corp., 467 U.S. 752 (1984) , is a major US antitrust law case decided by the Supreme Court concerning the Pittsburgh firm Copperweld Corporation and the Chicago firm Independence Tube.  It that held that a parent company is incapable of conspiring with its wholly owned subsidiary for purposes of Section 1 of the Sherman Act because they cannot be considered separate economic entities.  Section 1 of the Sherman Act states that "Every contract, combination in the form of trust or otherwise, or conspiracy, in restraint of trade or commerce among the several States, or with foreign nations, is declared to be illegal."  However, for a condition of conspiracy to exist, there must be at least two parties involved.  "Copperweld" held that separate incorporation was not enough to render a parent and its subsidiary capable of conspiring, since forcibly the economic interests of a wholly owned subsidiary must be those of its parent.  It does not apply to partially owned subsidiaries.
Answer: Dublin