Question: The supreme leader of North Korea and also the younger brother of Kim Jong- chul is the chairman for which party?

Context paragraphs:
List of Iranian presidential elections: The tenth Iranian presidential election to be held in Iran.  The President of Iran is the highest official elected by direct, popular vote, although the President carries out the decrees, and answers to the Supreme Leader of Iran, who functions as the country's head of state.  Unlike the executive in other countries, the President of Iran does not have full control over anything, as these are ultimately under the control of the Supreme Leader.  Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates.  The procedures for presidential election and all other elections in Iran are outlined by the Supreme Leader.  The President functions as the executive of the decrees and wishes of the Supreme Leader.  These include signing treaties and other agreements with foreign countries and international organizations, with Supreme Leader's approval; administering national planning, budget, and state employment affairs, as decreed by the Supreme Leader.  The President also appoints the ministers, subject to the approval of Parliament, and the Supreme Leader who can dismiss or reinstate any of the ministers at any time, regardless of the president or parliament's decision.

Kim Jong-un: Kim Jong-un (Chosŏn'gŭl: 김정은 ; ] or ] ] ; born 8 January 1982–84 or 5 July 1984) is the Chairman of the Workers' Party of Korea (WPK) and supreme leader of North Korea.  Kim is the second child of Kim Jong-il (1941–2011) and Ko Yong-hui.  Before taking power, Kim was rarely seen in public, and many of the activities of Kim and his government remain unknown.  Even details such as what year he was born, and whether he did indeed attend a Western school under a pseudonym, are difficult to confirm.

Red Flag Mangyongdae Revolutionary School: Red Flag Mangyongdae Revolutionary School is an elite school in Mangyongdae district, Pyongyang, North Korea.  Established in 1947, it is a special education school with access only to the children of war dead, Party, military, administrative and high-ranking officials’ families.  Originally, the school was called the Magyongdae School for the Bereaved Children of Revolutionaries, which was to "receive children of fallen revolutionaries" and "educate their children and train them into fine revolutionaries after the independence of Korea.  It was located at Kan-ri, Daedong, South Pyongan.  After the formal establishment of North Korea it was moved to Pyongyang and there the first statue of Kim Il-sung was erected, according to North Korean authorities, at the suggestion of Kim Jong Suk, Kim Il Sung's wife.

The Ministry of Truth (book): The Ministry of Truth: Kim Jong-Il's North Korea (German: Die totale Erinnerung.  Kim Jong Ils Nordkorea ) is a 2006 book by the Swiss writer Christian Kracht and the photographers Eva Munz and Lukas Nikol.  It consists of photographs from North Korea's capital Pyongyang accompanied by quotations from Kim Jong-il's book on film theory, "On the Art of the Cinema".  In his introduction, Kracht compares the country of North Korea to a film set where the government directs a simulation of a thriving nation.  The book was published in English on 1 October 2007 through Feral House. The title is a reference to George Orwell's Ministries of "Nineteen Eighty-Four".

Kim Jong-chul: Kim Jong-chul (born 25 September 1981) is a son of North Korean Kim Jong-il.  His younger brother is Kim Jong-un, now the leader of North Korea.  His older half-brother was Kim Jong-nam.

Information Center on North Korea: The Information Center on North Korea (Hangul: 북한자료센터 ; Hanja: 北韓資料센터 ) is an institution under the Ministry of Unification devoted to collect and study North Korea-related materials in South Korea.  The center, located on the fifth floor of the National Library of Korea in Seoul, has a vast collection of over 100,000 North Korean publications and videos, including every edition of the "Rodong Sinmun" and the complete works of Kim Il Sung and Kim Jong Il.  Besides political propaganda, its collection also includes children's books, textbooks and daily artifacts.  The center obtained these materials through the official liaison with Pyongyang or purchasing them from Russia and China.  It is an important hub for North Korea study for researchers in and outside Korea.

President of Iran: The President of Iran (Persian: رییس‌جمهور ایران "Rayis Jomhur-e Irān") is the head of government of the Islamic Republic of Iran.  The President is the highest popularly elected official in Iran (however, the president is still required to gain the Leader’s official approval before being sworn in before the Parliament, and the Leader also has the power to dismiss the elected president anytime).  The President carries out the decrees, and answers to the Supreme Leader of Iran, who functions as the country's head of state.  Unlike the executive in other countries, the President of Iran does not have full control over anything, as these are ultimately under the control of the Supreme Leader.  Chapter IX of the Constitution of the Islamic Republic of Iran sets forth the qualifications for presidential candidates.  The procedures for presidential election and all other elections in Iran are outlined by the Supreme Leader.  The President functions as the executive of the decrees and wishes of the Supreme Leader.  These include signing treaties and other agreements with foreign countries and international organizations, with Supreme Leader's approval; administering national planning, budget, and state employment affairs, as decreed by the Supreme Leader.  The President also appoints the ministers, subject to the approval of Parliament, and the Supreme Leader who can dismiss or reinstate any of the ministers at any time, regardless of the president or parliament's decision.  Iran’s regional policy is directly controlled by the office of the Supreme Leader with the Ministry of Foreign Affairs’ task limited to protocol and ceremonial occasions.  All of Iran’s ambassadors to Arab countries, for example, are chosen by the Quds Corps, which directly reports to the Supreme Leader.

Jang Song-thaek: Jang Song-thaek (] ; also romanized as Jang Sung-taek, Chang Sŏng-t'aek and other variations; January or February 1946 – 12 December 2013) was a leading figure in the government of North Korea.  He was married to Kim Kyong-hui, the only daughter of former North Korean supreme leader Kim Il-sung, the only sister of former North Korean supreme leader Kim Jong-il and the aunt of Kim Jong-un, the supreme leader of North Korea.

Original masters of taekwondo: Original Masters of TaeKwonDo is a group of twelve South Korean martial art masters assembled by the Korea Taekwondo Association (KTA) in the early 1960s to promote the newly established art of taekwondo.  In alphabetical order following Korean naming conventions, they are: Choi Chang Keun, Choi Kwang Jo, Han Cha Kyo, Kim Jong Chan, Kim Kwang Il, Kong Young Il, Park Jong Soo, Park Jung Tae, Park Sun Jae, Rhee Chong Chul, Rhee Chong Hyup, and Rhee Ki Ha.

Hoeryong: Hoeryŏng (] ) is a city in North Hamgyŏng Province, North Korea.  It is located opposite Jilin Province, China, with the Tumen River in between.  Sanhe (三合鎮), in Longjing City, is the closest Chinese town across the river.  Hoeryŏng is claimed to be the birthplace of Kim Il Sung's first wife and Kim Jong Il's mother, Kim Jong Suk.  It was known as "Kainei" during Japanese rule.

Supporting paragraphs: Kim Jong-chul Kim Jong-un
Answer: Workers' Party of Korea