Question: Who is the Chief of State in the location known for having the best Internet in the world?

full_context: Document 1: Human Development Index: The list below displays the top-ranked country from each year of the Human Development Index. Norway has been ranked the highest twelve times, Canada eight times, followed by Japan which has been ranked highest three times. Iceland has been ranked highest twice.
Document 2: Seoul 1945: In July 2006, Rhee In-soo, adopted son of South Korea's first president Syngman Rhee, and Jang Byung-hye, daughter of former prime minister Jang Taek-sang, filed a lawsuit against the producers of "Seoul 1945", claiming that the drama distorts history and belittles the achievements of their late fathers.
Document 3: Korean War: The resultant South Korean government promulgated a national political constitution on 17 July 1948, and elected Syngman Rhee as President on 20 July 1948. The Republic of Korea (South Korea) was established on 15 August 1948. In the Russian Korean Zone of Occupation, the Soviet Union established a Communist North Korean government led by Kim Il-sung. President Rhee's régime excluded communists and leftists from southern politics. Disenfranchised, they headed for the hills, to prepare for guerrilla war against the US-sponsored ROK Government.
Document 4: Estonia: A developed country with an advanced, high-income economy and high living standards, Estonia ranks very high in the Human Development Index, and performs favourably in measurements of economic freedom, civil liberties, education, and press freedom (third in the world in 2012). Estonia has been among the fastest growing economies in the European Union and is a part of the World Trade Organization and the Nordic Investment Bank. Estonia is often described as one of the most internet-focused countries in Europe.
Document 5: Greece: Internet cafés that provide net access, office applications and multiplayer gaming are also a common sight in the country, while mobile internet on 3G and 4G- LTE cellphone networks and Wi-Fi connections can be found almost everywhere. 3G/4G mobile internet usage has been on a sharp increase in recent years, with a 340% increase between August 2011 and August 2012. The United Nations International Telecommunication Union ranks Greece among the top 30 countries with a highly developed information and communications infrastructure.
Document 6: President of South Korea: Moon Jae - in, former human rights lawyer and chief of staff to then - President Roh Moo - hyun, assumed post of President of South Korea on 10 May 2017 immediately upon being elected with a plurality of 41.1%, in contrast to 24.0% and 21.4% won by his major opponents, conservative Hong Joon - pyo and centrist Ahn Cheol - soo, respectively.
Document 7: Economy of Greece: Greece has tended to lag behind its European Union partners in terms of Internet use, with the gap closing rapidly in recent years. The percentage of households with access to the Internet more than doubled between 2006 and 2013, from 23% to 56% respectively (compared with an EU average of 49% and 79%). At the same time, there has been a massive increase in the proportion of households with a broadband connection, from 4% in 2006 to 55% in 2013 (compared with an EU average of 30% and 76%). However, Greece also has the EU's third highest percentage of people who have never used the Internet: 36% in 2013, down from 65% in 2006 (compared with an EU average of 21% and 42%).
Document 8: Prime Minister of South Korea: Prime Minister of the Republic of Korea 대한민국국무총리 Prime ministerial standard Prime ministerial emblem Incumbent Lee Nak - yeon since 31 May 2017 Style Prime Minister (총리님) (informal) Member of State Council National Security Council Appointer President of South Korea (Subject to the National Assembly's approval) Term length No fixed term Constituting instrument Constitution of South Korea Inaugural holder Lee Beom - seok Formation July 31, 1948; 69 years ago (1948 - 07 - 31) Website (in English) pmo.go.kr/ (in Korean) pmo.go.kr/
Document 9: Communications in Somalia: As of 2009, dial up, wireless and satellite services were available. Dial up internet services in Somalia were among the fastest growing on the continent, with an annual landline growth rate of over 12.5%. The increase in usage was largely due to innovative policy initiatives adopted by the various Somali telecom operators, including free local in-town calls, a flat rate of $10 per month for unlimited calls, a low charge of $0.005 per minute for Internet connections, and a one-time connection fee of $50. Global Internet Company, a firm jointly owned by the major Somali telecommunication networks Hormuud Telecom, Telcom Somalia and Nationlink, was the country's largest ISP. It was at the time the only provider of dial up services in Somalia's south-central regions. In the northern Puntland and Somaliland regions, online networks offered internet dial up services to their own group of subscribers. Among these firms was Golis Telecom Somalia in the northeast and Telesom in the northwest.
Document 10: List of countries by Internet connection speeds: Rank Country / Territory Avg. Peak Connection speed (Mb / s) Relative speed Singapore 184.5 184.5 Hong Kong 129.5 129.5 South Korea 121 121 Qatar 107.9 107.9 5 Thailand 106.6 106.6 6 Israel 99.1 99.1 7 Sweden 95.3 95.3 8 Romania 95 95 9 Taiwan 94.7 94.7 10 Japan 94.5 94.5
Document 11: In Jin Moon: In Jin Moon is the former president of the Unification Church of the United States and a daughter of Unification Church founder Reverend Sun Myung Moon and his wife Hak Ja Han. Moon was born in South Korea in 1965 and moved with her family to the United States in 1973. She studied political science and philosophy at Columbia University and pursued her graduate studies at Harvard Divinity School. In the 1980s, Moon spoke at public rallies in support of her father who was convicted of tax fraud by the United States government.
Document 12: Saint Helena: ADSL-broadband service is provided with maximum speeds of up to 1536 KBit/s downstream and 512 KBit/s upstream offered on contract levels from lite £16 per month to gold+ at £190 per month. There are a few public WiFi hotspots in Jamestown, which are also being operated by SURE (formerly Cable & Wireless).
Document 13: Ham Tae-young: During his tenure as a judge, he reversed the death sentence of the young Syngman Rhee, who became the first president of South Korea four decades later. After the Korean Empire fell and was annexed by Japan, Ham devoted his life to getting his country back. He was one of the 48 representatives of the March 1st Movement and was jailed several times. Ham was also active as a leader of Christianity in Korea, clashed often with Communists, and resisted Shinto rituals imposed by the Japanese government.
Document 14: Park Geun-hye: Park Geun - hye (Hangul: 박근혜; Hanja: 朴槿惠; RR: Bak Geun (-) hye; IPA: (pak ‿ k͈ɯn. hje); born 2 February 1952) is a former South Korean politician who served as the 18th President of South Korea from 2013 to 2017. Park was the first woman to be President of South Korea and also the first female president popularly elected as head of state in East Asia. She was also the first South Korean president to be born after the country's founding; her predecessors were either born during Japanese rule or during the post-World War II transitional period.
Document 15: List of countries by Internet connection speeds: Rank Country / Territory Avg. connection speed (Mb / s) Relative speed - Global 5.6 5.6 South Korea 26.7 26.7 Sweden 19.1 19.1 Norway 18.8 18.8 Japan 17.4 17.4 5 Netherlands 17.0 17 6 Hong Kong 16.8 16.8 7 Latvia 16.7 16.7 8 Switzerland 16.7 16.7 9 Finland 16.6 16.6 10 Denmark 16.1 16.1
ground_truth: Moon Jae - in
sub_queries: who has the best internet in the world Answer: South Korea
who is the chief of state in South Korea Answer: Moon Jae - in