Question: The painter whose work appears in the Castello Sforzesco in Milan is known as the father of what? 

full_context: Document 1: Palazzo Leoni Montanari, Vicenza: The Palazzo Leoni Montanari is a late Baroque palace located in Contra’ San Corona number 25 in central Vicenza in the Veneto region of Italy. It now houses exhibition rooms, meeting places, and art collections owned by the bank Intesa Sanpaolo.
Document 2: Trivulzio Madonna: The Trivulzio Madonna is a painting by the Italian Renaissance painter Andrea Mantegna, executed in 1497. It is housed in the Sforza Castle Pinacoteca of the Castello Sforzesco, Milan.
Document 3: Michelangelo: Michelangelo di Lodovico Buonarroti Simoni ( ; ] ; 6 March 1475 – 18 February 1564) was an Italian sculptor, painter, architect, and poet of the High Renaissance born in the Republic of Florence, who exerted an unparalleled influence on the development of Western art. Considered to be the greatest living artist during his lifetime, he has since been described as one of the greatest artists of all time. Despite making few forays beyond the arts, his versatility in the disciplines he took up was of such a high order that he is often considered a contender for the title of the archetypal Renaissance man, along with his rival and fellow Florentine Medici client, Leonardo da Vinci.
Document 4: Andrea Palladio: Andrea Palladio (] ; 30 November 1508 – 19 August 1580) was an Italian architect active in the Republic of Venice. Palladio, influenced by Roman and Greek architecture, primarily by Vitruvius, is widely considered to be one of the most influential individuals in the history of architecture. All of his buildings are located in what was the Venetian Republic, but his teachings, summarized in the architectural treatise, "The Four Books of Architecture", gained him wide recognition. The city of Vicenza and the Palladian Villas of the Veneto are UNESCO World Heritage Sites.
Document 5: La Bella Principessa: La Bella Principessa (English: "The Beautiful Princess"), also known as Portrait of Bianca Sforza, Young Girl in Profile in Renaissance Dress and Portrait of a Young Fiancée, is a portrait in coloured chalks and ink, on vellum, of a young lady in fashionable costume and hairstyle of a Milanese of the 1490s. Sold at auction in 1998 as an early 19th-century German work, some experts have since attributed it to Leonardo da Vinci. In 2010 one of those experts, Martin Kemp, made it the subject of his book "La Bella Principessa: The Story of the New Masterpiece by Leonardo da Vinci". Evidence discovered in 2011 accounting for its provenance has strengthened the case for it being by Leonardo; the sheet appears to have been cut from a Milanese book of which the remainder has long been in Warsaw, which comes from the "milieu" of Ludovico Sforza, Leonardo's employer.
Document 6: Raphael: Raffaello Sanzio da Urbino (] ; March 28 or April 6, 1483April 6, 1520), known as Raphael ( , ), was an Italian painter and architect of the High Renaissance. His work is admired for its clarity of form, ease of composition, and visual achievement of the Neoplatonic ideal of human grandeur. Together with Michelangelo and Leonardo da Vinci, he forms the traditional trinity of great masters of that period.
Document 7: List of works by Leonardo da Vinci: Leonardo da Vinci (baptised Leonardo di ser Piero da Vinci) (   ), (April 15, 1452 – May 2, 1519) was one of the leading artists of the High Renaissance. Fifteen works are generally attributed either in whole or in large part to him. Most are paintings on panel, with the remainder a mural, a large drawing on paper, and two works in the early stages of preparation. The authorship of several paintings traditionally attributed to Leonardo being disputed. Two major works are known only as copies. Works are regularly attributed to Leonardo with varying degrees of credibility. None of Leonardo's paintings are signed. The attributions here draw on the opinions of various scholars.
Document 8: Galleria d'Arte Moderna, Milan: The Galleria d'Arte Moderna ("modern art gallery") is a modern art museum in Milan, in Lombardy in northern Italy. It is housed in the Villa Reale, at Via Palestro 16, opposite the Giardini Pubblici. The collection consists largely of Italian and European works from the 18th to the 20th centuries.
Document 9: Galileo Galilei: Galileo Galilei (] ; 15 February 1564 – 8 January 1642) was an Italian polymath: astronomer, physicist, engineer, philosopher, and mathematician. He has been called the "father of observational astronomy", the "father of modern physics", the "father of the scientific method", and the "father of science". Galileo studied speed and velocity, gravity and free fall, the principle of relativity, inertia, projectile motion and also worked in applied science and technology, describing the properties of pendulums and "hydrostatic balances", inventing the thermoscope and various military compasses, and using the telescope (a Dutch optical instrument) for scientific observations of celestial objects.
Document 10: Sforza Castle Pinacoteca: The Sforza Castle Pinacoteca ("Pinacoteca del Castello Sforzesco" in Italian) is an art gallery in the complex of the Sforza Castle Museums in Milan, northern Italy.
Document 11: Leonardo da Vinci: Leonardo di ser Piero da Vinci (] ; 15 April 14522 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian Renaissance polymath whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. He has been variously called the father of palaeontology, ichnology, and architecture, and is widely considered one of the greatest painters of all time. Sometimes credited with the inventions of the parachute, helicopter and tank, he epitomised the Renaissance humanist ideal.
Document 12: Sforza Castle: Sforza Castle (Italian: "Castello Sforzesco" ) is in Milan, northern Italy. It was built in the 15th century by Francesco Sforza, Duke of Milan, on the remains of a 14th-century fortification. Later renovated and enlarged, in the 16th and 17th centuries it was one of the largest citadels in Europe. Extensively rebuilt by Luca Beltrami in 1891–1905, it now houses several of the city's museums and art collections.
Document 13: Sala delle Asse: The Sala delle Asse (In English: 'room of the tower' or 'room of the wooden boards'), is the location for a wall and ceiling painting in tempera on plaster, of decorated "intertwining plants with fruits and monochromes of roots and rocks", by Leonardo da Vinci, dating from about 1498 and located in the Castello Sforzesco in Milan.
Document 14: Vitruvius: Marcus Vitruvius Pollio (born c. 80–70 BC, died after c. 15 BC), commonly known as Vitruvius, was a Roman author, architect, civil engineer and military engineer during the 1st century BC, known for his multi-volume work entitled "De architectura". His discussion of perfect proportion in architecture and the human body, led to the famous Renaissance drawing by Da Vinci of "Vitruvian Man".
Document 15: Museo d'Arte Antica: The Museo d'Arte Antica is an art museum in the Castello Sforzesco ("Sforza Castle") of Milan, in Lombardy in northern Italy. It has a large collection of sculpture from the late antiquity, Mediaeval and Renaissance periods. The various frescoed rooms of the museum house an armoury, a tapestry room, some funerary monuments, the Rondanini Pietà and two mediaeval portals.
ground_truth: palaeontology, ichnology, and architecture