Question: Grosvenor House is a twin tower complex in Dubai Marina in Dubai, United Arab Emirates, the complex, which is owned by Sheikh Ahmed bin Saeed Al Maktoum,   is president of the Dubai Civil Aviation Authority, CEO and chairman of which organization, chairman of Dubai World, and Noor Takaful insurance company?
Context: The Dubai Electricity and Water Authority (DEWA) (هيئة كهرباء ومياه دبي ) is a public service infrastructure company that was founded on 1 January 1992 by Sheikh Maktoum bin Rashid Al Maktoum.  It arose from the merger of the Dubai Electricity Company and the Dubai Water Department that had been operating independently until then.  These organizations were established in 1959 by sheikh Rashid bin Saeed Al Maktoum, former ruler of Dubai.  The objective of the state-run company is making available to the people of Dubai an adequate and reliable supply of electricity and water. Shiekh Ahmed bin Saeed Al Maktoum (Arabic: أحمد بن سعيد آل مكتوم‎ ‎ ; born 1 December 1958) is president of the Dubai Civil Aviation Authority, CEO and chairman of the Emirates Group, chairman of Dubai World, and Noor Takaful insurance company.  He is chairman of the Dubai Supreme Fiscal Committee, and second vice chairman of the Dubai Executive Council. The Holy Trinity Church is an inter-denominational Christian church in Dubai, United Arab Emirates.  It is part of the Chaplaincy of Dubai, Sharjah and the Northern Emirates.  It was founded on 5 April 1970, on the land granted by the Emir of Dubai, Sheikh Rashid bin Saeed Al Maktoum. The Dubai Airshow is a biennial show held in Dubai, United Arab Emirates.  It is organised by F&E Aerospace since the year 1989; it is organised under the patronage of HH Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai,in cooperation with the Government of Dubai, the Dubai Civil Aviation Authority, Dubai Airports and in collaboration with the UAE Armed Forces. Al Ahmadiya School is a semi-formal private school in Dubai, and is today owned and managed by Dubai Culture and Arts Authority.  Founded in the year 1912 by Sheikh Ahmed bin Dalmouk, of the pearl trade in the Persian Gulf.  Following his demise, his son Sheikh Mohammed bin Ahmed bin Dalmouk completed the construction of the school and named it Al Ahmadiya School in honor of his father.  The Dubai government had worked on the restoration of Al Ahmadiya School in mid-1994 and converted it into a museum which was inaugurated by His Highness Sheikh Hamdan bin Rashid Al Maktoum on March 20, 2000, representing the genesis of semi-formal education in Dubai.  Recently celebrated its Centenary.  Working Hours at Al Ahmadiya School are Saturday to Thursday: 08:00 – 19:30, Friday: 14:30 – 19:30 St. Mary's Catholic Church, Dubai is a church founded by Sheikh Rashid bin Saeed Al Maktoum, Vice President and Prime Minister of the U.A.E.  In 1966 he donated land to build the church.  Rev. Fr.  Eusebius Daveri and his team pioneered this project.  Sheikh Rashid bin Saeed Al Maktoum inaugurated St. Mary’s Catholic Church on 7 April 1967. Sheikh Rashid bin Mohammed bin Rashid Al Maktoum (Arabic: الشيخ راشد بن محمد آل مكتوم‎ ‎ , styled "HH Sheikh Rashid"; 12 November 1981 – 19 September 2015) was the son of United Arab Emirates Vice President, Prime Minister and ruler of Dubai Sheikh Mohammed bin Rashid Al Maktoum and Sheikha Hind bint Maktoum bin Juma Al Maktoum.  He was former Crown Prince of Dubai till 2008 when he was replaced by his brother Hamdan.  At the age of 33, he died, according to the official report, of a heart attack on 18 September 2015.  He has a son named Mohammed bin Rashid Al Maktoum. Dubai Aviation City Corporation “Dubai World Central (DWC)” is owned by the Government of Dubai and chaired by Sheikh Ahmed bin Saeed Al Maktoum.  It is one of the strategic projects for the government as it positions Dubai to be a commercial center and international logistics hub.  It is considered to be one of the most ambitious projects in the world occupying an area of 140 km in Jebel Ali. Mohamed Alabbar (Arabic: محمد بن علي العبار‎ ‎ ), is an Emirati billionaire and the founder and Chairman of Emaar Properties, one of the largest real estate development companies in the world with annual revenue of $4.2 billion and a market cap of over $20 billion, known for developing the world's tallest building Burj Khalifa and the world's largest mall Dubai Mall, which are part of Emaar's 500-acre flagship mega-development Downtown Dubai, as well as The Tower at Dubai Creek Harbour, set to be over 3,000 feet tall upon completion in 2020, the 2,000-seat Dubai Opera, Dubai Marina, the world's biggest man-made marina, Emirates Hills, regarded as "the Beverly Hills of Dubai", and King Abdullah Economic City, established with King Abdullah of Saudi Arabia as one of the largest private developments in the region spanning 64 square miles.  Alabbar, who acts as a top adviser to the Ruler of Dubai and Vice President and Prime Minister of the United Arab Emirates, Sheikh Mohammed bin Rashid Al Maktoum, formerly served as the founding director general of the Dubai Department of Economic Development. Grosvenor House is a twin tower complex in Dubai Marina in Dubai, United Arab Emirates.  The two towers, Grosvenor House West Marina Beach and Grosvenor House The Residence, stand at the same height of 210 metres (690 ft) with 48 floors each.  The complex, which is owned by Sheikh Ahmed bin Saeed Al Maktoum, is named after the Grosvenor House in London.
Answer: Emirates Group