Question: When did the torch arrive in the city where Kang Sok-ju died?

full_context: Document 1: An Kyong-ho: He was born in Gangwon, and is a graduate of Kim Il-sung University in Pyongyang. He currently serves as the Chief Director of the Committee for the Peaceful Reunification of the Fatherland. He first entered international news in 1988, when he attended South-North preparatory talks. He was a delegate to the 9th and 11th sessions of the Supreme People's Assembly, held in 1990 and 2003.
Document 2: North Korea at the 2008 Summer Olympics: North Korea (Democratic People's Republic of Korea) competed in the 2008 Summer Olympics, held in Beijing, People's Republic of China from August 8 to August 24, 2008. The country sent 63 athletes, competing in 11 sports.
Document 3: U Tong-chuk: According to official North Korean state media, U graduated from Kim Il-sung University with a philosophy degree. He later served in a number of minor posts in the Organization and Guidance Department of the Workers' Party of Korea before being moved to a leading position in the Ministry of State Security (or State Security Department) in the 1990s. He was promoted to colonel-general, member of the National Defence Commission, and first vice-minister of State Security in 2009. This put him in charge of the ministry and gave him access to the country's top echelon, as the ministry was reportedly under Kim Jong-il directly, and he accompanied Kim Jong-il on a number of tours and official events, including a dinner with former US President Bill Clinton. On 28 September 2010, the 3rd Party Conference elevated him to member of the Politburo and the Central Military Commission; the day before he had been promoted to general of the Korean People's Army.
Document 4: 2008 Summer Olympics torch relay: After being lit at the birthplace of the Olympic Games in Olympia, Greece on March 24, the torch traveled to the Panathinaiko Stadium in Athens, and then to Beijing, arriving on March 31. From Beijing, the torch was following a route passing through six continents. The torch has visited cities along the Silk Road, symbolizing ancient links between China and the rest of the world. The relay also included an ascent with the flame to the top of Mount Everest on the border of Nepal and Tibet, China from the Chinese side, which was closed specially for the event.
Document 5: Gulnara Karimova: Karimova graduated from the Youth Mathematic Academy in Tashkent in 1988. During 1987 she interned at the State Committee of Uzbekistan on Statistics. From 1989 to 1994 she attended Tashkent State University, where she obtained a bachelor's degree from the International Economics department. During her second year, she worked as a translator at the Chamber of Commerce and Industry of the Republic of Uzbekistan. In 1992, she completed a course of jewellery design in New York's Fashion Institute of Technology.Between 1994 and 1996 she was enrolled at Institute of Economy at the Uzbekistan Academy of Science where she pursued a master's degree. During 1994-1995 she was intern-teacher at the political science department of the University of World Economy and Diplomacy in Tashkent. Afterwards, from summer 1995 until 1996, she worked at the Ministry of Foreign Affairs of Uzbekistan at the department for political analysis and forecast, where she was assigned to write analytical reports for the State Security Council and the Presidential Administration.The next phase of her education took place after a few years of full-time work. Between 1998 and 2000, Karimova enrolled at the graduate level at Harvard University, where she was awarded a master's degree in regional studies. At the same time, she was enrolled at the University of World Economy and Diplomacy (UWED) in Tashkent, where in 2001, was "awarded" a PhD in political science. Since 2009, she has held a chair of political science at the UWED. She also holds a Bachelor of Arts in telecommunications which she received in 2006, from Tashkent University of Informational Technologies.
Document 6: Pierre Joxe: A graduate of the "Ecole nationale d'administration", he joined the Court of Audit of France in the 1960s. Whereas his father, Louis Joxe, was Justice Minister of Charles de Gaulle, Pierre Joxe entered politics as a follower of François Mitterrand, first in the Convention of Republican Institutions, then (from 1971) in the renewed Socialist Party (PS). Considered as one of the closest allies of the PS leader, he was elected as a deputy for the Saône-et-Loire "département" in 1973. He presided over the regional council of Burgundy from 1979 to 1982.
Document 7: Semyon Grigoryev: Grigoriyev graduated from the Moscow State Institute of International Relations in 1983, and went on to work at the Ministry of Foreign Affairs in a position at the Soviet embassy in Kabul, Afghanistan.
Document 8: 2008 Summer Olympics torch relay: Thailand: The April 18 relay through Bangkok was the Olympic flame's first visit to Thailand. The relay covered just over 10 km, and included Bangkok's Chinatown. The torch was carried past Democracy Monument, Chitralada Palace and a number of other city landmarks. M.R. Narisa Chakrabongse, Green World Foundation (GWF) chairwoman, withdrew from the torch-running ceremony, protesting against China's actions in Tibet. Several hundred protesters were present, along with Olympic supporters. Thai authorities threatened to arrest foreign protesters and ban them from future entry into Thailand. A coalition of Thai human rights groups announced that it would organise a "small demonstration" during the relay, and several hundred people did indeed take part in protests, facing Beijing supporters. Intended torchbearer Mom Rajawongse Narissara Chakrabongse boycotted the relay, to protest against China's actions in Tibet. In Bangkok, students told the media that the Chinese Embassy provided them with transportation and gave them shirts to wear.
Document 9: 2008 Summer Olympics torch relay: North Korea: The event was held in Pyongyang on April 28. It was the first time that the Olympic torch has traveled to North Korea. A crowd of thousands waving pink paper flowers and small flags with the Beijing Olympics logo were organized by the authoritarian regime watched the beginning of the relay in Pyongyang, some waving Chinese flags. The event was presided over by the head of the country's parliament, Kim Yong Nam. The North, an ally of China, has been critical of disruptions to the torch relay elsewhere and has supported Beijing in its actions against protests in Tibet. Kim passed the torch to the first runner Pak Du Ik, who played on North Korea's 1966 World Cup soccer team, as he began the 19-kilometre route through Pyongyang. The relay began from the large sculpted flame of the obelisk of the Juche Tower, which commemorates the national ideology of Juche, or "self-reliance", created by the country's late founding President Kim Il Sung, father of leader Kim Jong Il, who did not attend.
Document 10: 2008 Summer Olympics torch relay: Kazakhstan: The first torchbearer in Almaty, where the Olympic torch arrived for the first time ever on April 2, was the President of Kazakhstan Nursultan Nazarbaev. The route ran 20 km from Medeo stadium to Astana Square. There were reports that Uighur activists were arrested and some were deported back to China.
Document 11: 2008 Summer Olympics torch relay: In many cities along the North American and European route, the torch relay was protested by advocates of Tibetan independence, animal rights, and legal online gambling, and people protesting against China's human rights record, resulting in confrontations at a few of the relay locations. These protests, which ranged from hundreds of people in San Francisco, to effectively none in Pyongyang, forced the path of the torch relay to be changed or shortened on a number of occasions. The torch was extinguished by Chinese security officials several times during the Paris leg for security reasons, and once in protest in Paris.
Document 12: Kathmandu: Kathmandu Metropolitan City (KMC), in order to promote international relations has established an International Relations Secretariat (IRC). KMC's first international relationship was established in 1975 with the city of Eugene, Oregon, United States. This activity has been further enhanced by establishing formal relationships with 8 other cities: Motsumoto City of Japan, Rochester of the USA, Yangon (formerly Rangoon) of Myanmar, Xi'an of the People's Republic of China, Minsk of Belarus, and Pyongyang of the Democratic Republic of Korea. KMC's constant endeavor is to enhance its interaction with SAARC countries, other International agencies and many other major cities of the world to achieve better urban management and developmental programs for Kathmandu.
Document 13: Kostyantyn Gryshchenko: In 1975 Kostyantyn Gryshchenko graduated with honors from Moscow State Institute of International Relations with a specialty in international law. Besides his native Ukrainian and Russian languages he is fluent in English and French.
Document 14: 2018 Winter Olympics torch relay: The 2018 Winter Olympics torch relay began 24 October 2017 and ended on 9 February 2018, in advance of the 2018 Winter Olympics. After being lit in Olympia, Greece, the torch traveled to Athens on 31 October. The torch began its Korean journey on 1 November, visiting all Regions of Korea. The Korean leg began in Incheon: the torch travelled across the country for 101 days. 7,500 relay runners participated in the torch relay over a distance of 2,017 km. The torchbearers each carried the flame for 200 metres. The relay ended in Pyeongchang's Olympic Stadium, the main venue of the 2018 Olympics. The final torch was lit by figure skater Yuna Kim.
Document 15: Kang Sok-ju: Having obtained a Bachelor's degree in French from the University of International Affairs in Pyongyang, Kang began a diplomatic career. His first significant position was as the Korean Workers' Party's deputy director for international affairs, and then director.
ground_truth: April 28
sub_queries: Kang Sok-ju >> place of death Answer: Pyongyang
When did the torch arrive in Pyongyang ? Answer: April 28