Question: Who wrote the national anthem of the country where the town of Nittambuwa is located?

full_context: Document 1: 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 2: 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 3: 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 4: D. S. Senanayake: Don Stephen Senanayake (; ; 21 October 1883 – 22 March 1952) was a Sri Lankan statesmen. He was the first Prime Minister of Sri Lanka having emerged as the leader of the Sri Lankan independence movement that led to the establishment of self-rule in Sri Lanka. He is considered as the "Father of the Nation".
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: 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 7: Kohuwala: Kohuwala is a suburb in Colombo, Sri Lanka and is situated where the Colombo Piliyandala Road crosses Nugegoda Dehiwala Road. Hence it is connected to Nugegoda, Dehiwala and /Pamankada/Colombo and Boralesgamuwa/Piliyandala. Kohuwala is very close to Colombo South Teaching Hospital, Kalubowila. Kohuwala is inside the administration boundary of Dehiwala-Mount Lavinia Municipal Council.
Document 8: Wickramasinhapura: Wickramasinhapura is a sub town which is located within the Battaramulla main town limit in the Western Province of Sri Lanka. It is a suburb of Colombo attached to the Kaduwela Municipal Council. Wickramasinhapura is located in between Pelawatte and Thalawathugoda. Independent Television Network (ITN) is located in Wickramasinhapura.
Document 9: 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 10: Colombo: Colombo (English: / kəˈlʌmboʊ /; Sinhalese: කොළඹ Kolamba, pronounced (ˈkəlɐmbɞ); Tamil: கொழும்பு, translit. Koḻumpu) is the commercial capital and largest city of Sri Lanka. According to the Brookings Institution, Colombo metropolitan area has a population of 5.6 million, and 752,993 in the city proper. It is the financial centre of the island and a popular tourist destination. It is located on the west coast of the island and adjacent to the Greater Colombo area which includes Sri Jayawardenepura Kotte, the legislative capital of Sri Lanka and Dehiwala - Mount Lavinia. Colombo is often referred to as the capital since Sri Jayawardenepura Kotte is within the urban area of, and a suburb of, Colombo. It is also the administrative capital of Western Province, Sri Lanka and the district capital of Colombo District. Colombo is a busy and vibrant place with a mixture of modern life and colonial buildings and ruins. It was the legislative capital of Sri Lanka until 1982.
Document 11: Sooriyawewa: Sooriyawewa is a town in Sri Lanka. It is located in Hambantota District of Southern Province, Sri Lanka. Mahinda Rajapaksa International Stadium is situated here.
Document 12: Kosgama: Kosgama is a small town in Colombo District, Sri Lanka. Located 46 km from Colombo, on the A4 (Colombo - Avissawella) highway, it is also served by the Kelani Valley Railway Line. The town is administered by the Seethawaka Pradeshiya Sabha (Divisional Council).
Document 13: 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 14: Nittambuwa: Nittambuwa is a town, situated in Gampaha District, Sri Lanka. The town situated on the Colombo-Kandy highway. It is connected also to Negombo with the highway via Veyangoda-Minuwangoda.It was the home town of first prime minister S W R D Bandaranayake and prime minister Sirimawo Bandaranayake.
Document 15: Koswatte: Koswatta is a junction located inside the main town Battaramulla located near Colombo in Sri Lanka. The junction is also known as the "Thalangama-Koswatte" junction.
ground_truth: Ananda Samarakoon
sub_queries: Nittambuwa >> country Answer: Sri Lanka
who has written the national anthem of Sri Lanka Answer: Ananda Samarakoon