Question: What country held the 2004 Summer Olympics in the city where the headquarters of Unison Healthcare Group is located?

full_context: Document 1: Mongolia at the Olympics: Mongolian athletes have won a total of 26 medals, all in Summer Olympics competitions, in freestyle wrestling, boxing, shooting, and judo. Prior to the 2008 Summer Olympics, Mongolia had won more silver and bronze medals without winning any gold medals than any other nation. Mongolia won their first ever gold medal in the Judo, with Naidangiin Tüvshinbayar winning in the Men's half heavyweight.
Document 2: Chinese Taipei at the 2004 Summer Olympics: Chinese Taipei left Athens with a total of five Olympic medals (two golds, two silver, and one bronze), being considered its most successful Olympics. Chinese Taipei's highlight of the Games came with a remarkable milestone for taekwondo jin Chen Shih-hsin and Chu Mu-yen, claiming the nation's first ever gold medals in Olympic history. Meanwhile, another taekwondo jin Huang Chih-hsiung picked up his second medal with a sterling silver in the men's lightweight division, adding it to his bronze from Sydney four years earlier.
Document 3: Haifu: Haifu () is a company founded in 1999 and headquartered in Chongqing, China, which is a leading manufacturer of non-invasive ultrasound therapeutic systems for both malignant and benign tumors.
Document 4: SingHealth: SingHealth is Singapore's largest group of healthcare institutions. The group was formed in 2000 and consists of four public hospitals, five national specialty centres and a network of eight polyclinics. It includes Singapore's oldest and largest hospital, Singapore General Hospital, as well as several of Singapore's largest specialty centres.
Document 5: International Trade Office Group: The ITO Group one of the largest Egyptian companies founded in 1979 by engineer Karim Fathi Ashmawi concerns mainly with all activities of import and export, and supplying many industrial sectors with its demand of raw material the group's activities is expanded to include several other sectors,(International Crane Factory I.C.F) - (International Coke Company I.C.C) - (International Shipping Company I.S.C) -( International Integrated Systems I.I.S),the ITO group headquartered is located in Alexandria, Egypt.
Document 6: Du Li: Du Li competed in the 2004 Summer Olympics, where she won the gold medal in the women's 10 metre air rifle competition. She has achieved the maximum 400 in this event twice (2003 and 2006). She was unable to defend that title in the 2008 Summer Olympics, losing to Kateřina Emmons on August 9, 2008, and finishing 5th in the 2008 Summer Olympics. However, she fought back to win a gold medal in the women's 50 metre rifle three positions competition, setting a new Olympic record in the process.
Document 7: Judo at the 2004 Summer Olympics: Judo at the 2004 Summer Olympics took place in the Ano Liossia Olympic Hall and featured 368 judoka competing for 14 gold medals with seven different weight categories in both the men's and women's competitions. Japan dominated the event by taking 8 gold and 2 silver medals.
Document 8: Hanover: Various industrial businesses are located in Hannover. The Volkswagen Commercial Vehicles Transporter (VWN) factory at Hannover-Stöcken is the biggest employer in the region and operates a huge plant at the northern edge of town adjoining the Mittellandkanal and Motorway A2. Jointly with a factory of German tire and automobile parts manufacturer Continental AG, they have a coal-burning power plant. Continental AG, founded in Hanover in 1871, is one of the city's major companies, as is Sennheiser. Since 2008 a take-over is in progress: the Schaeffler Group from Herzogenaurach (Bavaria) holds the majority of the stock but were required due to the financial crisis to deposit the options as securities at banks. TUI AG has its HQ in Hanover. Hanover is home to many insurance companies, many of which operate only in Germany. One major global reinsurance company is Hannover Re, whose headquarters are east of the city centre.
Document 9: Unison Healthcare Group: Unison Healthcare Group (UHG; ), started out as "Unison" (友信行), is a Taiwanese medical device distributor founded in 1955, headquartered in Taipei. The corporation provides equipment and systems ranging from radiology, cardiology, orthopedic, telemedicine, medical imaging to medical robots. It is also a turnkey project and total solution provider for hospitals, offering overseas technical support in over 45 countries, such as China, Vietnam, Mongolia and Thailand.
Document 10: Carestream Health: Carestream Health, formerly Eastman Kodak Company's Health Group, is an independent subsidiary of Onex Corporation, Toronto, Ontario, Canada. Onex is one of Canada's largest corporations.
Document 11: 2008 Summer Olympics medal table: Athletes from 87 countries won medals, leaving 115 countries without a medal, and 54 of them won at least one gold medal. Both of these categories set new records until surpassed in 2016. Athletes from China won the most gold medals, with 48 gold medals. Athletes from the United States won the most total medals, with 112. Afghanistan, Mauritius, Sudan, Tajikistan and Togo won their first Olympic medals. Athletes from Mongolia (which previously held the record for most medals without a gold) and Panama won their first gold medals. Serbian swimmer Milorad Čavić won the first medal for the country as an independent NOC. Serbian athletes have previously won medals as nationals of Yugoslavia and Serbia and Montenegro. Samoa won its first Olympic medal due to medals reallocation after the IOC retested doping samples in 2016.
Document 12: Unitech Group: The company is based in New Delhi and ranks 1484, in Forbes Global 2000 listing of the top 2000 public companies in the world by Forbes magazine, 32nd in India. Its construction business includes highways, roads, powerhouses, transmission lines, and it has residential projects called Unitech Cities/Uni World, in cities like Mumbai, Delhi, Kolkata , Bhubaneswar, Chennai, Hyderabad,Mohali, Bangalore, Kochi, Noida,Greater Noida, Agra, Lucknow, Varanasi,Gurgaon, and Ghaziabad.
Document 13: Guam: The Government of Guam maintains the island's main health care facility, Guam Memorial Hospital, in Tamuning. U.S. board certified doctors and dentists practice in all specialties. In addition, the U.S. Naval Hospital in Agana Heights serves active-duty members and dependents of the military community. There is one subscriber-based air ambulance located on the island, CareJet, which provides emergency patient transportation across Guam and surrounding islands. A private hospital, the Guam Regional Medical City opened its doors in early 2016.
Document 14: Chinese Taipei at the 2016 Summer Olympics: Chinese Taipei competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. "Chinese Taipei" is the designated name used by Taiwan to participate in some international organizations and almost all sporting events, including the Olympic Games. Neither the common name "Taiwan" nor the official name "Republic of China" would be used due primarily to opposition from the People's Republic of China. This was also the nation's ninth consecutive appearance at the Summer Olympics.
Document 15: 2008 Summer Olympics medal table: Athletes from 87 countries won medals, leaving 115 countries without a medal, and 54 of them won at least one gold medal. Both of these categories set new records until surpassed in 2016. Athletes from China won the most gold medals, with 48 gold medals. Athletes from the United States won the most total medals, with 111. Afghanistan, Mauritius, Sudan, Tajikistan and Togo won their first Olympic medals. Athletes from Mongolia (which previously held the record for most medals without a gold) and Panama won their first gold medals. Serbian swimmer Milorad Čavić won the first medal for the country as an independent NOC. Serbian athletes have previously won medals as nationals of Yugoslavia and Serbia and Montenegro. Samoa won its first Olympic medal due to medals reallocation after 2016 wave of doping samples retesting.
ground_truth: tw
sub_queries: Unison Healthcare Group >> headquarters location Answer: Taipei
Chinese Taipei at the 2004 Summer Olympics >> country Answer: tw