Question: What is the political party of Aung San Oo's sibling?

full_context: Document 1: Aung San Oo: Aung San Oo () is the elder brother of State Counsellor of Myanmar and Nobel Peace Prize winner Aung San Suu Kyi; the two are the only surviving children of Burmese independence leader Aung San. Aung San Oo is an engineer. Aung San Oo has been described by the Burmese Lawyers' Council and the National Coalition Government of the Union of Burma as a potential surrogate of the junta in an attempt to humiliate Aung San Suu Kyi and place her in an untenable position. "Time" magazine reports that, according to Burmese exiles and observers in Rangoon, the junta used the alleged surrogacy of Aung San Oo and his lawsuit as an act of spite against the National League for Democracy leader.
Document 2: Yin Yin Nwe: Yin Yin Nwe's father is Sao Saimong Mangrai, a member of the princely Kengtung State and a highly regarded scholar on Shan State and the Head of the Shan State Education Department during the post-Independence years. Yin Yin Nwe's mother is Mi Mi Khaing, also a scholar and a former Principal of Kambawza School. Her father, Sao Saimong, had an administrative career after the Shan principalities agreed to become part of the Union of Burma, and was Chief Education Officer for Shan and Kayah States. Her mother was the author of "Burmese Family", a book on Burmese culture and was one of the first women to write in English about Burmese culture and traditions. Yin Yin Nwe is of Mon ancestry on her mother's side and of Tai ancestry on her father's side, given that the state of Kengtung originated in the 13th century, when the Chiang Mai dynasty founded a new kingdom which was named Lanna, sending a prince to Kengtung to establish a separate kingdom.
Document 3: Myanmar: Since the 2010 election, the government has embarked on a series of reforms to direct the country towards liberal democracy, a mixed economy, and reconciliation, although doubts persist about the motives that underpin such reforms. The series of reforms includes the release of pro-democracy leader Aung San Suu Kyi from house arrest, the establishment of the National Human Rights Commission, the granting of general amnesties for more than 200 political prisoners, new labour laws that permit labour unions and strikes, a relaxation of press censorship, and the regulation of currency practices.
Document 4: Myanmar: For most of its independent years, the country has been engrossed in rampant ethnic strife and Burma's myriad ethnic groups have been involved in one of the world's longest-running ongoing civil wars. During this time, the United Nations and several other organisations have reported consistent and systematic human rights violations in the country. In 2011, the military junta was officially dissolved following a 2010 general election, and a nominally civilian government was installed. While former military leaders still wield enormous power in the country, Burmese Military have taken steps toward relinquishing control of the government. This, along with the release of Aung San Suu Kyi and political prisoners, has improved the country's human rights record and foreign relations, and has led to the easing of trade and other economic sanctions. There is, however, continuing criticism of the government's treatment of the Muslim Rohingya minority and its poor response to the religious clashes. In the landmark 2015 election, Aung San Suu Kyi's party won a majority in both houses, ending military rule.
Document 5: National League for Democracy: The National League for Democracy (Burmese: အမျိုးသား ဒီမိုကရေစီ အဖွဲ့ချုပ်, IPA: [ʔəmjóðá dìmòkəɹèsì ʔəpʰwḛdʑoʊʔ]; abbreviated NLD) is a social-democratic and liberal democratic political party in Myanmar (Burma), currently serving as the governing party. Founded on 27 September 1988, it has become one of the most influential parties in Myanmar's pro-democracy movement. Aung San Suu Kyi, the Special Honorary President of the Socialist International and a Nobel Peace Prize laureate, serves as its President and she is currently serving as State Counsellor of Myanmar. The party won a substantial parliamentary majority in the 1990 Burmese general election. However, the ruling military junta refused to recognise the result. On 6 May 2010, the party was declared illegal and ordered to be disbanded by the junta after refusing to register for the elections slated for November 2010. In November 2011, the NLD announced its intention to register as a political party to contend future elections, and Myanmar's Union Election Commission approved their application for registration on 13 December 2011.In the 2012 by-elections, the NLD contested 44 of the 45 available seats; winning 43, and losing only one seat to the SNDP. Party leader Aung San Suu Kyi won the seat of Kawhmu.In the 2015 general election, the NLD won a supermajority in both houses of the Assembly, paving the way for the country's first non-military president in 54 years.
Document 6: Myanmar: The government has assembled a National Human Rights Commission that consists of 15 members from various backgrounds. Several activists in exile, including Thee Lay Thee Anyeint members, have returned to Myanmar after President Thein Sein's invitation to expatriates to return home to work for national development. In an address to the United Nations Security Council on 22 September 2011, Myanmar's Foreign Minister Wunna Maung Lwin confirmed the government's intention to release prisoners in the near future.
Document 7: Myanmar: The impact of the post-election reforms has been observed in numerous areas, including ASEAN's approval of Myanmar's bid for the position of ASEAN chair in 2014; the visit by United States Secretary of State Hillary Clinton in December 2011 for the encouragement of further progress, which was the first visit by a Secretary of State in more than fifty years, during which Clinton met with the Burmese president and former military commander Thein Sein, as well as opposition leader Aung San Suu Kyi; and the participation of Aung San Suu Kyi's National League for Democracy (NLD) party in the 2012 by-elections, facilitated by the government's abolition of the laws that previously barred the NLD. As of July 2013, about 100 political prisoners remain imprisoned, while conflict between the Burmese Army and local insurgent groups continues.
Document 8: Aung Thet Mann: Aung Thet Mann (, ; born 19 June 1977), also known as Shwe Mann Ko Ko (), is a Burmese businessman and currently CEO of Ayer Shwe Wah, a major Burmese company. Aung Thet Mann's father is Shwe Mann, a former military general and Speaker of the Pyithu Hluttaw. He graduated from the Yangon Institute of Economics. Aung Thet Mann is married to Khin Hnin Thandar.
Document 9: Myanmar: According to the Crisis Group, since Myanmar transitioned to a new government in August 2011, the country's human rights record has been improving. Previously giving Myanmar its lowest rating of 7, the 2012 Freedom in the World report also notes improvement, giving Myanmar a 6 for improvements in civil liberties and political rights, the release of political prisoners, and a loosening of restrictions. In 2013, Myanmar improved yet again, receiving a score of five in civil liberties and a six in political freedoms
Document 10: Alexander Aris: Alexander Aris Myint San Aung (, ; born 12 April 1973) is an English civil rights activist. Alexander Aris is the elder son of Aung San Suu Kyi and Michael Aris. He is also a grandson of Aung San, who achieved the Independence Of Myanmar (although he was assassinated in 1947, one year before the Independence)
Document 11: Myanmar: Sanctions imposed by the United States and European countries against the former military government, coupled with boycotts and other direct pressure on corporations by supporters of the democracy movement, have resulted in the withdrawal from the country of most US and many European companies. On 13 April 2012 British Prime Minister David Cameron called for the economic sanctions on Myanmar to be suspended in the wake of the pro-democracy party gaining 43 seats out of a possible 45 in the 2012 by-elections with the party leader, Aung San Suu Kyi becoming a member of the Burmese parliament.
Document 12: Than E: She married an Austrian documentary filmmaker, Warner Fend, and had a great influence on Aung San Suu Kyi. Than E, a family friend, persuaded Suu Kyi to relocate to New York City and work for the United Nations. Than E was born to a Baptist family and attended Rangoon University, before joining the Teacher's Training College.
Document 13: Aung San Suu Kyi: Aung San Suu Kyi was born on 19 June 1945 in Rangoon (now Yangon), British Burma. According to Peter Popham, she was born in a small village outside Rangoon called Hmway Saung. Her father, Aung San, allied with the Japanese during World War II. Aung San founded the modern Burmese army and negotiated Burma's independence from the British Empire in 1947; he was assassinated by his rivals in the same year. She grew up with her mother, Khin Kyi, and two brothers, Aung San Lin and Aung San Oo, in Rangoon. Aung San Lin died at the age of eight, when he drowned in an ornamental lake on the grounds of the house. Her elder brother emigrated to San Diego, California, becoming a United States citizen. After Aung San Lin's death, the family moved to a house by Inya Lake where Aung San Suu Kyi met people of various backgrounds, political views and religions. She was educated in Methodist English High School (now Basic Education High School No. 1 Dagon) for much of her childhood in Burma, where she was noted as having a talent for learning languages. She speaks four languages: Burmese, English, French and Japanese. She is a Theravada Buddhist.
Document 14: Myanmar: Myanmar has received extensive military aid from China in the past Myanmar has been a member of ASEAN since 1997. Though it gave up its turn to hold the ASEAN chair and host the ASEAN Summit in 2006, it chaired the forum and hosted the summit in 2014. In November 2008, Myanmar's political situation with neighbouring Bangladesh became tense as they began searching for natural gas in a disputed block of the Bay of Bengal. Controversy surrounding the Rohingya population also remains an issue between Bangladesh and Myanmar.
Document 15: Myanmar: The impact of the post-election reforms has been observed in numerous areas, including ASEAN's approval of Myanmar's bid for the position of ASEAN chair in 2014; the visit by United States Secretary of State Hillary Clinton in December 2011 for the encouragement of further progress—it was the first visit by a Secretary of State in more than fifty years (Clinton met with the Burmese president and former military commander Thein Sein, as well as opposition leader Aung San Suu Kyi); and the participation of Aung San Suu Kyi's National League for Democracy (NLD) party in the 2012 by-elections, facilitated by the government's abolition of the laws that previously barred the NLD. As of July 2013, about 100 political prisoners remain imprisoned, while conflict between the Burmese Army and local insurgent groups continues.
ground_truth: National League for Democracy (NLD) party
sub_queries: Aung San Oo >> sibling Answer: Aung San Suu Kyi
What political party does Aung San Suu Kyi belong to ? Answer: National League for Democracy (NLD) party