Question: Who is the current prime minister of the neighboring country of the country with the best internet in the world?

full_context: Document 1: 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 2: Geography of South Korea: South Korea is located in East Asia, on the southern half of the Korean Peninsula jutting out from the far east of the Asian land mass. The only country with a land border to South Korea is North Korea, lying to the north with 238 kilometres (148 mi) of border running along the Korean Demilitarized Zone. South Korea is mostly surrounded by water and has 2,413 kilometres (1,499 mi) of coast line along three seas; to the west is the Yellow Sea (known in Korea as West Sea), to the south is the East China Sea, and to the east is the Sea of Japan (known in Korea as East Sea). Geographically, South Korea's land mass is approximately 100,032 square kilometres (38,623 sq mi). 290 square kilometres (110 sq mi) of South Korea are occupied by water. The approximate coordinates are 37 ° North, 127 ° 30 East. Notable islands include Jeju Island (Jejudo), Ulleung Island (Ulleungdo), and Liancourt Rocks (Dokdo, known in Japan as Takeshima).
Document 3: Geography of Japan: Japan is an island nation in East Asia comprising a volcanic archipelago extending along the continent's Pacific coast. It lies between 24 ° to 46 ° north latitude and from 123 ° to 146 ° east longitude. Japan is southeast of the Russian Far East, separated by the Sea of Okhotsk; slightly east of the Korean Peninsula, separated by the Sea of Japan; and east - northeast of China and Taiwan, separated by the East China Sea. The closest neighboring country to Japan is Russia.
Document 4: South Korea: The country, including all its islands, lies between latitudes 33 ° and 39 ° N, and longitudes 124 ° and 130 ° E. Its total area is 100,032 square kilometres (38,622.57 sq mi).
Document 5: 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 6: Premier of North Korea: The Premier of the Cabinet (Chosŏn'gŭl: 총리; Hancha: 總理; MR: Chongni) is nominally the non-executive head of government of North Korea. The office is also alternatively known as Prime Minister of North Korea. The current premier is Pak Pong - ju.
Document 7: South Korea: South Korea occupies the southern portion of the Korean Peninsula, which extends some 1,100 km (680 mi) from the Asian mainland. This mountainous peninsula is flanked by the Yellow Sea to the west, and the Sea of Japan to the east. Its southern tip lies on the Korea Strait and the East China Sea.
Document 8: 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 9: 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 10: North Korea: Executive power is vested in the Cabinet of North Korea, which is headed by Premier Pak Pong-ju. The Premier represents the government and functions independently. His authority extends over two vice-premiers, 30 ministers, two cabinet commission chairmen, the cabinet chief secretary, the president of the Central Bank, the director of the Central Bureau of Statistics and the president of the Academy of Sciences. A 31st ministry, the Ministry of People's Armed Forces, is under the jurisdiction of the State Affairs Commission.
Document 11: Prime minister: In the UK, where devolved government is in place, the leaders of the Scottish, Northern Irish and Welsh Governments are styled First Minister. In India, The Prime Minister is referred to as "Pradhan Mantri", meaning "prime minister". In Pakistan, the prime minister is referred to as "Wazir-e-Azam", meaning "Grand Vizier".
Document 12: 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
Document 13: Government of North Korea: In the socialist government of North Korea, the cabinet is the administrative and executive body. The North Korean government consists of three branches: administrative, legislative, and judicial. However, they are not independent of each other.
Document 14: 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 15: Geography of Vietnam: Vietnam is located on the eastern margin of the Indochinese peninsula and occupies about 331,211.6 square kilometers, of which about 25% was under cultivation in 1987. It borders the Gulf of Thailand, Gulf of Tonkin, and Pacific Sea, alongside China, Laos, and Cambodia. The S - shaped country has a north - to - south distance of 1,650 kilometers and is about 50 kilometers wide at the narrowest point. With a coastline of 3,260 kilometers, excluding islands, Vietnam claims 12 nautical miles (22.2 km; 13.8 mi) as the limit of its territorial waters, an additional 12 nautical miles (22.2 km; 13.8 mi) as a contiguous customs and security zone, and 200 nautical miles (370.4 km; 230.2 mi) as an exclusive economic zone.
ground_truth: Pak Pong - ju
sub_queries: who has the best internet in the world Answer: South Korea
what are the neighboring countries of South Korea Answer: North Korea
who is the prime minister of North Korea now Answer: Pak Pong - ju