Question: Who wrote the national anthem for Wilhelm Woutersz's country?

full_context: Document 1: Laurence D. Wohlers: Laurence D. Wohlers (born 1955) is Deputy Special Representative (Political) for the United Nations Multidimensional Integrated Stabilization Mission in the Central African Republic (MINUSCA), appointed by United Nations Secretary-General Ban Ki-moon on 25 April 2014.
Document 2: Gamini Atukorale: Gamini Atukorale (2 April 1951 – 1 January 2002) was the former Transport, Highways and Civil Aviation Minister in Sri Lanka and former General Secretary and Deputy Leader of United National Party.
Document 3: Yoshio Utsumi: He worked for the Japanese Ministry of Posts and Telecommunications in various high level posts, including helping liberalize Japan's telecommunications market, serving as director-general of the ministry, and serving as first secretary of the Japanese mission to the ITU for 3 years, before he moved to the post of ITU secretary-general in 1998.
Document 4: Sri Lanka Matha: There are differing accounts as to the origin of the Sri Lanka Matha. The most widely held view is that Sri Lankan composer Ananda Samarakoon wrote the music and lyrics to the song inspired / influenced by Bengali poet Rabindranath Tagore. A minority suggest that Tagore wrote the anthem in full. Some have suggested that Tagore wrote the music whilst Samarakoon wrote the lyrics. Tagore being directly involved in the creation of the song has been denied by some historians like Indian Lipi Ghosh and Sri Lankan Sandagomi Coperahewa. Samarakoon had been a pupil of Tagore at Visva - Bharati University, Santiniketan. After returning to Ceylon Samarakoon taught music at Mahinda College, Galle. The song, which was then known as Namo Namo Mata, was first sung by students at Mahinda College. After it was sung by the choir from Musaeus College, Colombo at a public event it became hugely popular in Ceylon and was widely played on radio.
Document 5: Sare Jahan se Accha: ``Sare Jahan se Accha ''(Urdu: سارے جہاں سے اچھا ‎ ‎; Sāre Jahāṉ se Acchā), formally known as`` Tarānah - i - Hindi'' (Urdu: ترانۂ ہندی ‎ ‎; ``Anthem of the People of India ''), is an Urdu language patriotic song written for children by poet Muhammad Iqbal in the ghazal style of Urdu poetry. The poem was published in the weekly journal Ittehad on 16 August 1904. Publicly recited by Iqbal the following year at Government College, Lahore, British India (now in Pakistan) it quickly became an anthem of opposition to the British Raj. The song, an ode to Hindustan -- the land comprising present - day Bangladesh, India and Pakistan, was later published in 1924 in the Urdu book Bang - i - Dara.
Document 6: Sri Lanka Matha: There are differing accounts as to the origin of the Sri Lanka Matha. The most widely held view is that Sri Lankan composer Ananda Samarakoon wrote the music and lyrics to the song inspired / influenced by Bengali poet Rabindranath Tagore. A minority suggest that Tagore wrote the anthem in full. Some have suggested that Tagore wrote the music whilst Samarakoon wrote the lyrics. Samarakoon had been a pupil of Tagore at Visva - Bharati University, Santiniketan. After returning to Ceylon Samarakoon taught music at Mahinda College, Galle. The song, which was then known as Namo Namo Mata, was first sung by students at Mahinda College. After it was sung by the choir from Musaeus College, Colombo at a public event it became hugely popular in Ceylon and was widely played on radio.
Document 7: Thilan Wijesinghe: He is currently the Chairman and acting CEO of the Public Private Partnership Unit of the Finance Ministry of Sri Lanka, Chairman of TWCorp (Pvt) Ltd., Sapphirus Lanka (Pvt) Ltd., and Digital Commerce Lanka (Pvt) Ltd. which owns www.wow.lk, the largest online mall in Sri Lanka.
Document 8: William L. Swing: William Lacy Swing (born September 11, 1934 in Lexington, North Carolina). He is a diplomat and former United States Ambassador, and United Nations Special Representative of the Secretary-General and Under Secretary General. He was the Director General of the International Organization for Migration until António Vitorino's appointment in 2018.
Document 9: Minister of Foreign Affairs (Sri Lanka): Minister of Foreign Affairs of Sri Lanka Incumbent Tilak Marapana Ministry of Foreign Affairs Appointer The President with advice of Prime Minister Inaugural holder Don Stephen Senanayake Formation 24 September 1947 Website www.mea.gov.lk
Document 10: S. Mahinda: S. Mahinda arrived in Ceylon (now Sri Lanka) at a young age and was ordained as a Buddhist monk. Having learned the Sinhala language, he became a poet, creating several literary works inspiring patriotism among the Sinhalese and urging them to fight for their freedom during Sri Lankan Independence movement.. He is now considered a national hero of Sri Lanka and one among the greatest of Sinhalese poetry figures of all time.
Document 11: Muttukumara Kavirajar: Muttukumara Kavirajar (1780–1851), the Ceylon / Sri Lankan Tamil poet, was one of the earliest Hindus to protest via published native literature the conversion attempts by the various Protestant missionaries within the Jaffna peninsula in Sri Lanka. He wrote the Jnanakkummi or "Kummi Song on Wisdom" and Yesumataparikaram or "Abolition of the Jesus Doctrine". These poem were initially published in 1850s by Arumuga Navalar
Document 12: Vande Mataram: It played a vital role in the Indian independence movement, first sung in a political context by Rabindranath Tagore at the 1896 session of the Indian National Congress. It became a popular marching song for political activism and Indian freedom movement in 1905. Spiritual Indian nationalist and philosopher Sri Aurobindo referred it as ``National Anthem of Bengal ''. The song and the novel containing it was banned by the British government, but workers and general public defied the ban, many went to colonial prisons repeatedly for singing it, and the ban was overturned by the Indians after they gained independence from the colonial rule.
Document 13: Wilhelm Woutersz: Thelmuth Harris Wilhelm Woutersz (19 July 1939 - 16 November 2003) was a prominent Sri Lankan diplomat and civil servant, who served as the Permanent Secretary to the Ministry of Foreign Affairs of Sri Lanka. He had served as Sri Lankan Ambassador to People’s Republic of China, Italy & Yugoslavia.
Document 14: Sivakant Tiwari: Sivakant Tiwari, (20 December 1945 – 26 July 2010), known professionally as S. Tiwari, was a senior legal officer of the Singapore Legal Service. He was educated at the University of Singapore, graduating in law in 1971. He then made the Legal Service his career, serving as head of the Ministry of Defence's legal department (1974), and head of the Attorney-General's Chambers' Civil Division (1987) and International Affairs Division (1995). He was lead counsel in three significant commissions of inquiry arising out of fatal incidents in the 1970s and 1980s. A skilled negotiator, Tiwari was a member of the Singapore delegation which dealt with the United States – Singapore Free Trade Agreement signed in 2003, and served as legal adviser to the delegation which established diplomatic relations between Singapore and the People's Republic of China. He was also on Singapore's legal team in a case concluded in 2003 that had been brought by Malaysia to the International Tribunal for the Law of the Sea for provisional measures against alleged damage to its territorial waters due to land reclamation by Singapore, and in the territorial dispute with Malaysia over Pedra Branca before the International Court of Justice in 2007.
Document 15: Sare Jahan se Accha: Sare Jahan se Accha (Urdu: سارے جہاں سے اچھا ‎; Sāre Jahāṉ se Acchā), formally known as Tarānah - i - Hindi (Urdu: ترانۂ ہندی ‎; Anthem of the People of India), is an Urdu language patriotic song written for children by poet Muhammad Iqbal in the ghazal style of Urdu poetry. The poem was published in the weekly journal Ittehad on 16 August 1904. Publicly recited by Iqbal the following year at Government College, Lahore, British India (now in Pakistan) it quickly became an anthem of opposition to the British Raj. The song, an ode to Hindustan -- the land comprising present - day Bangladesh, India and Pakistan, was later published in 1924 in the Urdu book Bang - i - Dara.
ground_truth: Ananda Samarakoon
sub_queries: Which country is Wilhelm Woutersz from? Answer: Sri Lanka
who has written the national anthem of Sri Lanka Answer: Ananda Samarakoon