Question: What is the tallest structure in the country Muharraq Island is located?

full_context: Document 1: Economy of Bahrain: Bahrain has an open economy. The Bahraini currency is the second-highest-valued currency unit in the world. Since the late 20th century, Bahrain has heavily invested in the banking and tourism sectors. The country's capital, Manama is home to many large financial structures. Bahrain's finance industry is very successful. In 2008, Bahrain was named the world's fastest growing financial center by the City of London's Global Financial Centres Index. Bahrain's banking and financial services sector, particularly Islamic banking, have benefited from the regional boom driven by demand for oil. Petroleum production is Bahrain's most exported product, accounting for 60% of export receipts, 70% of government revenues, and 11% of GDP. Aluminium production is the second most exported product, followed by finance and construction materials.
Document 2: Grattacielo Intesa Sanpaolo: Renzo Piano, Grattacielo Intesa Sanpaolo's architect, described the skyscraper as "bioclimatic building", being naturally ventilated and cooled; with a substantial amount of its power requirement to be generated from photovoltaic panels that cover the southern façade. It was awarded the LEED Platinum rating, making it the only high-rise building in Europe to hold such a certification.
Document 3: Askar, Bahrain: Askar () is a village on the south eastern coast of Bahrain. It is also home to the shrine of Sa'sa'a bin Sohan, a companion of Imam Ali. Inhabitants today include the Al-Buainain and Al-Kaabi tribes.
Document 4: Bahrain World Trade Center: The Bahrain World Trade Center (also called Bahrain WTC or BWTC) is a 240-metre-high (787 ft), 50-floor, twin tower complex located in Manama, Bahrain. Designed by the multi-national architectural firm Atkins, construction on the towers was completed in 2008. It is the first skyscraper in the world to integrate wind turbines into its design. The wind turbines were developed, built and installed by the Danish company Norwin A/S.The structure is constructed close to the King Faisal Highway, near popular landmarks such as the towers of Bahrain Financial Harbour (BFH), NBB and Abraj Al Lulu. It currently ranks as the second-tallest building in Bahrain, after the twin towers of the Bahrain Financial Harbour. The project has received several awards for sustainability, including:
Document 5: Hoora: Along with the Central Business District, Adliya, and Juffair, Hoora is considered as one of Manama's nightlife centres, with many bars, hotels, restaurants, pubs and nightclubs (both Arabic and Western), and it is very popular with Arab visitors to Bahrain.
Document 6: Mahooz: Mahooz is a neighborhood of Manama, Bahrain. The grave and shrine of the 13th century Shia theologian Maitham Al Bahrani is located in Mahooz. Y.AK is the current leader and the face of his hometown
Document 7: Al Hidd: Al Hidd (; transliterated: Al-Ḥidd) is a town in Bahrain, located on a sand spit on the southeastern extremity of Muharraq Island. The town has a large native Sunni population. It is also well known for its rich sea crabs as well as its clear blue seas.The altitude of Al Hidd is 3m.
Document 8: Al Markh: Al Markh () is one of the oldest and smallest villages of Bahrain. It neighbors Budaiya highway and the village of Duraz to the north, Saar and Magaba highway to the east, the villages of Bani Jamra and Al Garya to the west, and the village of Saar to the south.
Document 9: Gate of Europe: The Gate of Europe towers were designed by the American architects Philip Johnson and John Burgee, built by Fomento de Construcciones y Contratas and commissioned by the Kuwait Investment Office (hence their initial name ""Torres KIO"" or "KIO Towers"). Leslie E. Robertson Associates, RLLP New York (LERA) provided structural engineering services. Each building is 115 m tall with an inclination of 15°, making them the first inclined skyscrapers in the world. They are located near the Chamartín railway station, on the sides of the "Plaza de Castilla" bus station, north from the "Paseo de la Castellana" and near the Cuatro Torres Business Area (CTBA).
Document 10: A'ali: A'ali () is one of the biggest towns in Bahrain. It was part of the municipality of Mintaqah although from 2001 to 2014 it lay within the Central Governorate. It is a part of the Northern Governorate. A'ali is famous for its ancient burial mounds, especially several very large burial mounds in the city centre. A'ali is also famous for its traditional handcrafted pottery, which can be seen and bought from different potters and boutiques in the town.
Document 11: Dynamic Tower: The Dynamic Tower (also known as Dynamic Architecture Building or the Da Vinci Tower) is a proposed , 80-floor moving skyscraper, designed by architect David Fisher.
Document 12: World Port Center: World Port Centre is a 33-storey, skyscraper in Rotterdam, Netherlands. The tower was commissioned by ING Real Estate Development. The building costs amounted to approximately NLG100 million. The Port of Rotterdam Authority is the main occupant of the WPC, using floors 2 to 19. Floors 25 to 28 are rented to Eneco Energie, floors 29 to 32 are built as conference areas and are commercially leased to Regus. The grounds also cover the Argentine steak-restaurant Gaucho's.
Document 13: Hamad Town: Madinat Hamad or "Hamad Town" () is a primarily commuter city within northern Bahrain. It was a municipality of Bahrain in the central part of the country. Split from the municipality of Ar Rifa' wa al Mintaqah al Janubiyah in 1991, its territory is now in the Northern Governorate. Its name refers to the current king of Bahrain, Hamad ibn Isa Al Khalifah. The city is culturally diverse, housing a proportionally mixed Shia-Sunni population of varying socio-economic backgrounds. Today, Hamad Town is an epitome of Bahraini multiculturalism, with no single ethnic or religious group making up the majority of inhabitants.
Document 14: Marina One: Designed by Christoph Ingenhoven, Marina One covers a total gross floor area of approximately 3.67 million square feet. The development will include two 34-storey residential towers, two 30-storey prime grade A office towers and a retail podium, The Heart, which will feature lush greenery and landscaping by Gustafson Porter and ICN Design. Both were landscape architects behind Singapore's Gardens by the Bay in Marina South.
Document 15: Burj Khalifa: The Burj Khalifa (Arabic: برج خليفة ‎, Arabic for ``Khalifa Tower ''; pronounced English: / ˈbɜːrdʒ kəˈliːfə /), known as the Burj Dubai before its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total height of 829.8 m (2,722 ft) and a roof height (excluding antenna) of 828 m (2,717 ft), the Burj Khalifa has been the tallest structure in the world since its topping out in late 2008.
ground_truth: the twin towers of the Bahrain Financial Harbour
sub_queries: Muharraq Island >> country Answer: Bahrain
what is the tallest structure in Bahrain ? Answer: the twin towers of the Bahrain Financial Harbour