Question: What position did the Diyawadana Nilame of the Temple of Sacred Tooth Relic hold from 1900 - 1964?

full_context: Document 1: 1998 Temple of the Tooth attack: 1998 Temple of the Tooth attack is an attack on the Temple of the Tooth Relic, located in Kandy, Sri Lanka. The shrine, which is considered to be important to the Buddhists in Sri Lanka, houses the relic of the tooth of the Buddha, and is also a UNESCO designated World Heritage Site. In 1998, it was attacked by Liberation Tigers of Tamil Eelam (LTTE), a separatist militant organization which fought to create an independent Tamil state in Northern and Eastern parts of the country, from 1983 to 2009.
Document 2: Wat Phra That Phanom: Wat Phra That Phanom is the sacred precinct of the Phra That Phanom chedi, located in the district of the same name, in the southern part of Nakhon Phanom Province, northeastern Thailand. According to legend, this structure contains The Buddha's breast bone, and as such, it is one of the most important Theravada Buddhist structures in the region. It was originally built in the 16th century by the Laotian King Setthathirath of Lanxang. Each year, a festival is held in That Phanom to honor the temple. This festival lasts for one week, during which thousands of people make pilgrimages to honor the shrine.
Document 3: Royal Palace of Kandy: The Royal Palace of Kandy ("Maligawa") in Kandy, was the royal residence of the Sinhalese monarchy of the Kingdom of Kandy in Sri Lanka. The last king to reside in it was King Sri Vikrama Rajasinha until he was overthrown by the British in 1815 with the aid of Kandian chieftains. Once part of a large palace complex that included the King's Palace ("Raja Wasala"), Royal Audience Hall ("Magul Maduwa"), Queen's Palace ("Meda Wasala"), King's Harem Quarters ("Palle Vahale") and Queen's Bathing Pavilion ("Ulpange"), together with the Temple of the Tooth ("Sri Dalada Maligawa") that held the Relic of the tooth of the Buddha. By ancient tradition the one who was in possession of the "Tooth Relic" had claim to the throne. Adjacent to the Royal Palace is the Victorian era building that until recently housed Kandy High Court.
Document 4: 1989 Temple of the Tooth attack: 1989 Temple of the Tooth attack is an attack on the Temple of the Tooth Relic, located in Kandy, Sri Lanka. The shrine, which is considered to be important to the Buddhists in Sri Lanka, houses the relic of the tooth of the Buddha, and is a UNESCO designated World Heritage Site. It was attacked on 8 February 1989, allegedly by the armed cadres affiliated to Janatha Vimukthi Peramuna (JVP), a Marxist-Leninist Communist political party in Sri Lanka.
Document 5: Pradeep Nilanga Dela: Wanigasekara Wanasinghe Mudiyanse Ralahamilage Pradeep Nilanga Dela (known as Pradeep Nilanga Dela; Sinhala:ප්‍රදීප් නිලංග දෑල) is the present Diyawadana Nilame or Chief Custodian of Sri Dalada Maligawa and 19th Diyawadana Nilame. He acted as the Basnayake Nilame of Ruhunu Maha Kataragama devalaya and Sabaragamu Maha Saman devalaya, before being elected to the post of Diyawadana Nilame on July 1, 2005.
Document 6: Harris Leuke Ratwatte: Harris Leuke Ratwatte (known as Harris Leuke Ratwatte Dissawa ) (1900 - 1964) was a Ceylonese legislator. He was a member of the State Council of Ceylon, Parliament and the Senate of Ceylon. Ratwatte was also appointed a Dissawa and was elected as the Diyawadana Nilame of Sri Dalada Maligawa, Kandy.
Document 7: Kandy Esala Perahera: The Kandy Esala Perahera (the Esala procession of Kandy) also known as The Festival of the Tooth is a grand festival celebrated with elegant costumes and is held in July and August in Kandy, Sri Lanka. This historical procession is held annually to pay homage to the Sacred Tooth Relic of Lord Buddha, which is housed at the Sri Dalada Maligawa in Kandy. A unique symbol of Sri Lanka, the procession consists of many traditional local dances such as fire-dances, whip-dances, Kandyan dances and various other cultural dances, in addition to the elephants who are usually adorned with lavish garments. The festival ends with the traditional "diya-kepeema" ritual, a water cutting ceremony which is held at the Mahaweli River at Getambe, Kandy.
Document 8: May Ratnayake: May Ratnayeke (1892-1988) was a Sri Lankan physician, is known for being the second female medical student from that country and its first female doctor. Dr Ratnayeke was born May de Livera to John de Livera, one of six siblings, in Kandy. In her childhood, she attended local schools, then went on to medical school at Ceylon Medical College in Colombo. She graduated with her MD in 1916. After obtaining her degree, she worked at the American Mission Hospital in Jaffna, then moved to Lady Havelock Hospital. She was a fellow at the Royal Free Hospital for Women from 1925-1927. Dr Ratnayeke was married in 1927 and had three children, a son and a daughter who became physicians, and a son who became a tea planter. In 1927 she became a surgeon at Lady Havelock Hospital. She was a fellow at the University of Edinburgh Medical School for a year from 1932-1933. After her fellowship, she was promoted to chief surgeon, and joined the faculty at the medical school of the University of Ceylon.
Document 9: Heen Banda Udurawana: Heen Banda Udurawana (15 December 1900 – 31 August 1989) was a member of the Senate of Ceylon and Diyawadana Nilame of the Temple of the Tooth, Kandy.
Document 10: Diyawadana Nilame: Diyawadana Nilame is the office of chief lay custodian of Temple of the Tooth, Kandy, Sri Lanka. Formerly an office of the royal household, today it remains a prestigious position, enriched with over two thousand years of history to safeguard and carry out ancient rituals for the relic of the tooth of the Buddha. The Diyawadana Nilame has the responsibility of overseeing of all aspects of the Sri Dalada Maligawa. He has the traditional duty of organizing the annual pageant, the Kandy Esala Perahera. The current Diyawadana Nilame is Pradeep Nilanga Dela.
Document 11: Ruwan Wijewardene: Born to a political dynasty, he is the youngest son of Ranjani Senanayake and Ranjith Wijewardene (Chairman of Wijeya Newspapers). His maternal great grandfather, Rt Hon D.S Senanayake, was the first prime minister of Ceylon and his grand uncle, Dudley Senanayake, was the second prime minister of Ceylon and went on to become prime minister two more times during the 1950s and 1960s. His paternal grandfather, D. R. Wijewardena, was a press baron who was a leader in the Sri Lankan independence movement. A successful entrepreneur, he established Lake House newspapers and played a major role in the independence movement. Ruwan Wijewardene is a nephew of the first executive president J.R. Jayewardene of Sri Lanka and a cousin of Ranil Wickremesinghe, the Prime Minister of Sri Lanka.
Document 12: Temple of the Tooth: Sri Dalada Maligawa or the Temple of the Sacred Tooth Relic is a Buddhist temple in the city of Kandy, Sri Lanka. It is located in the royal palace complex of the former Kingdom of Kandy, which houses the relic of the tooth of the Buddha. Since ancient times, the relic has played an important role in local politics because it is believed that whoever holds the relic holds the governance of the country. Kandy was the last capital of the Sri Lankan kings and is a World Heritage Site mainly due to the temple.
Document 13: Lakshman Senewiratne: Lakshman Pinto Jayatilaka Senewiratne (born 9 March 1957) (known as "Lakshman Senewiratne") is a Sri Lankan politician, current State Minister of Science, Technology and Research and a member of the Parliament of Sri Lanka representing the Badulla District. and former Cabinet Minister of Sugar Industries, His father Capt. C. P. J. Senewiratne was a MP for Mahiyangana electorate and former Cabinet Minister of Labour in the government of J.R. Jayewardene.
Document 14: Andaw-thein Temple: Andaw Thein (Burmese: အံတော်သိမ်ဘုရား , ] ) is a temple in Mrauk U located at the northwest corner of the Shite-thaung Temple. The name means 'Tooth Shrine'. It contains a tooth relic of the Buddha coming from Sri Lanka. It was first built as an ordination hall between 1515 and 1521 by King Thazata, and restored by Min Bin between 1534 and 1542. It was later expanded into a temple by King Raza II in order to house a tooth relic of the Buddha he brought back from his pilgrimage to Ceylon, either in 1596 or 1606–1607.
Document 15: Sigiriya: Sigiriya or Sinhagiri ("Lion Rock" Sinhalese: සීගිරිය , Tamil: சிகிரியா , pronounced see-gi-ri-yə) is an ancient rock fortress located in the northern Matale District near the town of Dambulla in the Central Province, Sri Lanka. The name refers to a site of historical and archaeological significance that is dominated by a massive column of rock nearly 200 m high. According to the ancient Sri Lankan chronicle the Culavamsa, this site was selected by King Kasyapa (477 – 495 CE) for his new capital. He built his palace on the top of this rock and decorated its sides with colourful frescoes. On a small plateau about halfway up the side of this rock he built a gateway in the form of an enormous lion. The name of this place is derived from this structure —Sīhāgiri, the Lion Rock. The capital and the royal palace was abandoned after the king's death. It was used as a Buddhist monastery until the 14th century.
ground_truth: Ceylonese legislator