Question: Who has written the national anthem of the country filming Kaathirupaen Unakaaha?

full_context: Document 1: 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 2: Wasana: Wasana is a 1976 Sinhalese language romance film directed that follows the lives of middle-class people in Sri Lanka. The film stars Geetha Kumarasinghe, Vijaya Kumaranatunga and Malini Fonseka made notable roles. Also this film was the cinema debut of popular Sri Lankan film actress Geetha Kumarasinghe.
Document 3: Waiting for a Star to Fall: The song was used as the closing track to the 1990 movie Three Men and a Little Lady, and the single was re-released as a movie tie - in, with a new picture sleeve featuring the actors of the film. It peaked at # 76 in the UK.
Document 4: 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 5: 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 6: I'll Wait for You (Frankie Avalon song): "I'll Wait for You" is a song written by Peter De Angelis and Bob Marcucci and performed by Frankie Avalon. The song reached #15 on the "Billboard" Top 100 in 1958. The single's A-side, "What Little Girl", reached #79 on the "Billboard" Hot 100.
Document 7: 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 8: 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 9: Duhulu Malak: Duhulu Malak is a 1976 Sinhalese language romance film directed by Vijaya Dharmasri that follows the lives of middle-class people in Sri Lanka. The film stars Nita Fernando, Ravindra Randeniya and Tony Ranasinghe and is notable for containing the first depiction of adultery in a Sinhala film. As per some cinema analysts, the story of the film advises young people to be aware of their own attitudes, such as understanding, fairness and patience as they will lead them to a better married life.
Document 10: Hanthane Kathawa: Hanthane Kathawa (Sinhalese language word means "Story of Hanthana") is a 1969 film based on a love story of university students of Sri Lanka. It was directed by famous Sri Lankan film director Sugathapala Senerath Yapa and screened on August 1, 1968. This film also remarks the cinema debut of famous actor Vijaya Kumaratunga.
Document 11: Prateeksha: Prateeksha (English: Waiting; Hindi: प्रतीक्षा) is a 1993 Bollywood Action film, Produced by S. Ramanathan under the Raam Raj Kala Mandhir banner and directed by Lawrence D'Souza. It stars Jeetendra, Moushumi Chatterjee, Govinda, Shilpa Shirodkar in the pivotal roles and music composed by Rajesh Roshan.
Document 12: Kitulgala: Kitulgala is a small town in the west of Sri Lanka. It is in the wet zone rain forest, which gets two monsoons each year, and is one of the wettest places in the country. Nevertheless, it comes alive in the first three months of the year, especially in February, the driest month. The Academy Award-winning "The Bridge on the River Kwai" was filmed on the Kelani River near Kitulgala, although nothing remains now except the concrete foundations for the bridge (and, supposedly, the submerged train cars that plunged into the river in the climactic scene). Kitulgala is also a base for white-water rafting, which starts a few kilometres upstream and also popular as a location for adventure based training programs.
Document 13: 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 14: Kaathirupaen Unakaaha: Kaathirupaen Unakaaha, (I will wait for you) is a romantic love story filmed in Sri Lanka in 1976 and released in 1977.
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: What country did Kaathirupaen Unakaaha originate? Answer: Sri Lanka
who has written the national anthem of Sri Lanka Answer: Ananda Samarakoon