Question: Who wrote the national anthem of the country where Westminster House 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: 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 3: 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 4: 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 5: King George Hall, Colombo: The King George Hall (KGH) of the University of Colombo in Colombo is one of the oldest theatres of Sri Lanka. Built the mid-1920s following the establishment of the University College Colombo it was meant function as a theater, lecture hall and venue for many university functions, a purpose it serves to this day.
Document 6: Westminster: Westminster is a government district and former capital of the Kingdom of England in Central London within the City of Westminster, part of the West End, on the north bank of the River Thames. Westminster's concentration of visitor attractions and historic landmarks, one of the highest in London, includes the Palace of Westminster, Buckingham Palace, Westminster Abbey and Westminster Cathedral.
Document 7: 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 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: Monarchy of the United Kingdom: The sovereign's official residence in London is Buckingham Palace. It is the site of most state banquets, investitures, royal christenings and other ceremonies. Another official residence is Windsor Castle, the largest occupied castle in the world, which is used principally at weekends, Easter and during Royal Ascot, an annual race meeting that is part of the social calendar. The sovereign's official residence in Scotland is the Palace of Holyroodhouse in Edinburgh. The monarch stays at Holyrood for at least one week each year, and when visiting Scotland on state occasions.Historically, the Palace of Westminster and the Tower of London were the main residences of the English Sovereign until Henry VIII acquired the Palace of Whitehall. Whitehall was destroyed by fire in 1698, leading to a shift to St James's Palace. Although replaced as the monarch's primary London residence by Buckingham Palace in 1837, St James's is still the senior palace and remains the ceremonial Royal residence. For example, foreign ambassadors are accredited to the Court of St James's, and the Palace is the site of the meeting of the Accession Council. It is also used by other members of the Royal Family.Other residences include Clarence House and Kensington Palace. The palaces belong to the Crown; they are held in trust for future rulers, and cannot be sold by the monarch. Sandringham House in Norfolk and Balmoral Castle in Aberdeenshire are privately owned by the Queen.
Document 10: New Delhi: At the heart of the city is the magnificent Rashtrapati Bhavan (formerly known as Viceroy's House) which sits atop Raisina Hill. The Secretariat, which houses ministries of the Government of India, flanks out of the Rashtrapati Bhavan. The Parliament House, designed by Herbert Baker, is located at the Sansad Marg, which runs parallel to the Rajpath. Connaught Place is a large, circular commercial area in New Delhi, modelled after the Royal Crescent in England. Twelve separate roads lead out of the outer ring of Connaught Place, one of them being the Janpath.
Document 11: Westminster House: Westminster House is the official residence in Colombo for the British High Commissioner in Sri Lanka. It is situated in Cinnamon Gardens, a suburb of Colombo, and was acquired by the British Government in 1948. It is a colonial style bungalow, with large gardens and is named after the Palace of Westminster. In 2009, the British High Commission of Sri Lanka was moved to the land adjacent to the Westminster House after the land was acquired from the Meteorological Department.
Document 12: 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 13: Modera House: Modera House is a large bungalow (as mansions are referred to locally) in Colombo, Sri Lanka. A nineteenth century stately home, located in Mutwal north of Colombo. It is now part of the De La Salle College, Colombo.
Document 14: Fort (Colombo): Fort ( "Kotuwa": ) is the central business district of Colombo in Sri Lanka. It is the financial district of Colombo and the location of the Colombo Stock Exchange (CSE) and the World Trade Centre of Colombo from which the CSE operates. It is also the location of the Bank of Ceylon headquarters. Along the foreshore of the Fort area is the Galle Face Green Promenade, built in 1859 under the governance of Sir Henry George Ward, the Governor of Ceylon (Sri Lanka) during British colonial administration. Fort is also home to the General Post Office, hotels, government departments and offices.
Document 15: 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.
ground_truth: Ananda Samarakoon
sub_queries: Westminster House >> country Answer: Sri Lanka
who has written the national anthem of Sri Lanka Answer: Ananda Samarakoon