Background: Jan van Eyck (Dutch: ['jan van 'eik]) (before c. 1390 - 9 July 1441) was an Early Netherlandish painter active in Bruges. He is often considered one of the founders of Early Netherlandish painting, and, one of the most significant representatives of Northern Renaissance art.
Context: It is known that van Eyck was considered revolutionary within his lifetime; his designs and methods were heavily copied and reproduced. His motto, one of the first and still most distinctive signatures in art history, ALS IK KAN ("AS I CAN"), a pun on his name, first appeared in 1433 on Portrait of a Man in a Turban, which can be seen as indicative of his emerging self-confidence at the time. The years between 1434 and 1436 are generally considered his high point when he produced works including the Madonna of Chancellor Rolin, Lucca Madonna and Virgin and Child with Canon van der Paele. He married the much younger Margaret probably around 1432, about the same time he bought a house in Bruges; she is unmentioned before he relocated, while the first of their two children was born in 1434. Very little is known of Margaret, even her maiden name is lost - contemporary records refer to her mainly as Damoiselle Marguerite. She is thought to have been of aristocratic birth, though from the lower nobility, evidenced from her clothes in this portrait which are fashionable but not of the sumptuousness worn by the bride in the Arnolfini Portrait. Later, as the widow of a renowned painter Margaret was afforded a modest pension by the city of Bruges after Jan's death. At least some of this income was invested in lottery.  Van Eyck undertook a number of journeys on Philip the Duke of Burgundy's behalf between 1426 and 1429, journeys described in records as "secret" commissions, for which he was paid multiples of his annual salary. Their precise nature is still unknown, but they seem to involve his acting as envoy of the court. In 1426 he departed for "certain distant lands", possibly to the Holy Land, a theory given weight by the topographical accuracy of Jerusalem in The Three Marys at the Tomb, a painting completed by members of his workshop c. 1440.  A better documented commission was the journey to Lisbon along with a group intended to prepare the ground for the Duke's wedding to Isabella of Portugal. Van Eyck's was tasked with painting the bride, so that the Duke could visualise her before their marriage. Because Portugal was ridden with plague, their court was itinerant and the Dutch party met them at the out of the way castle of Avis. Van Eyck spent nine months there, returning to the Netherlands with Isabella as a bride to be; the couple married on Christmas Day of 1429. The princess was probably not particularly attractive, and that is exactly how Van Eyck conveyed her in the now lost portrait. Typically he showed his sitters as dignified, yet did not hide their imperfections. After his return, he was preoccupied with completing the Ghent Altarpiece, which was consecrated on 6 May 1432 at Saint Bavo Cathedral during an official ceremony for Philip. Records from 1437 say that he was held in high esteem by the upper ranks of Burgundian nobility and was employed in foreign commissions.
Question: what was one of his successes?
Answer: the Madonna of Chancellor Rolin,

Problem: Background: The Sinhalese (Sinhala: siNhl jaatiy Sinhala Jathiya, also known as Hela) are an Indo-Aryan-speaking ethnic group native to the island of Sri Lanka. They constitute about 75% of the Sri Lankan population and number greater than 16.2 million. The Sinhalese identity is based on language, historical heritage and religion. The Sinhalese people speak the Sinhalese language, an Indo-Aryan language, and are predominantly Theravada Buddhists, although a small percentage of Sinhalese follow branches of Christianity.
Context: The Sinhalese speak Sinhala, also known as "Helabasa"; this language has two varieties, spoken and written. Sinhala is an Indo-Aryan language within the broader group of Indo-European languages. The language was brought to Sri Lanka by the ancestors of the Sinhalese from northern India who settled on the island in the 6th century BCE. Sinhala developed in a way different from the other Indo-Aryan languages because of the geographic separation from its Indo-Aryan sister languages. Sinhala was influenced by many languages, prominently Pali, the sacred language of Southern Buddhism, and Sanskrit. Many early Sinhala texts such as the Hela Atuwa were lost after their translation into Pali. Other significant Sinhala texts include Amavatura, Kavu Silumina, Jathaka Potha and Sala Liheeniya. Sinhala has also adopted many loanwords of foreign origin, including from many Indian languages and colonial languages Portuguese, Dutch, and English.  Sandesha Kavyas written by Buddhist priests of Sri Lanka are regarded as some of the most sophisticated and versatile works of literature in the world. The Sinhala language was mainly inspired by Sanskrit and Pali, and many words of the Sinhala language derive from these languages. Today some English words too have come in as a result of the British occupation during colonial times, and the exposure to foreign cultures through television and Hollywood movies. Additionally many Dutch and Portuguese words can be seen in the coastal areas.  Folk tales like Mahadana Muttha saha Golayo and Kawate Andare continue to entertain children today. Mahadana Muttha tells the tale of a fool cum Pundit who travels around the country with his followers (Golayo) creating mischief through his ignorance. Kawate Andare tells the tale of a witty court jester and his interactions with the royal court and his son.  In the modern period, Sinhala writers such as Martin Wickremasinghe and G. B. Senanayake have drawn widespread acclaim. Other writers of repute include Mahagama Sekera and Madewela S. Ratnayake. Martin Wickramasinghe wrote the immensely popular children's novel Madol Duwa. Munadasa Cumaratunga's Hath Pana is also widely known.
Question: are any of these folks books to this day?
Answer:
continue to entertain children today.