paragraph_text: The Paleozoic spanned from roughly 541 to 252 million years ago (Ma) and is subdivided into six geologic periods; from oldest to youngest they are the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. Geologically, the Paleozoic starts shortly after the breakup of a supercontinent called Pannotia and at the end of a global ice age. Throughout the early Paleozoic, the Earth's landmass was broken up into a substantial number of relatively small continents. Toward the end of the era the continents gathered together into a supercontinent called Pangaea, which included most of the Earth's land area.

paragraph_text: Islamic architecture began in the 7th century CE, incorporating architectural forms from the ancient Middle East and Byzantium, but also developing features to suit the religious and social needs of the society. Examples can be found throughout the Middle East, North Africa, Spain and the Indian Sub-continent. The widespread application of the pointed arch was to influence European architecture of the Medieval period.

paragraph_text: An Antarctic oasis is a large area naturally free of snow and ice in the otherwise ice-covered continent of Antarctica.

paragraph_text: In calculus, the derivative of any linear combination of functions equals the same linear combination of the derivatives of the functions; this property is known as linearity of differentiation, the rule of linearity, or the superposition rule for differentiation. It is a fundamental property of the derivative that encapsulates in a single rule two simpler rules of differentiation, the sum rule (the derivative of the sum of two functions is the sum of the derivatives) and the constant factor rule (the derivative of a constant multiple of a function is the same constant multiple of the derivative). Thus it can be said that the act of differentiation is linear, or the differential operator is a linear operator.

paragraph_text: Otakar Mařák (5 January 1872 Esztergom, Hungary – 2 July 1939 Prague) was a tenor Czech opera singer, and a nephew of Julius Mařák who perfected his vocal skills at Prague's School of Applied Arts as well as at the Czech Academy of Arts. At the same time he studied singing privately.

paragraph_text: The European migrant crisis, or the European refugee crisis, is a term given to a period beginning in 2015 when rising numbers of people arrived in the European Union (EU), travelling across the Mediterranean Sea or overland through Southeast Europe. It is part of a pattern of increased immigration to Europe from other continents which began in the late 20th century and which has encountered resistance in many European countries.

paragraph_text: The Ordovician Period started at a major extinction event called the Cambrian-Ordovician extinction events some time about 485.4 ± 1.9 Ma. During the Ordovician the southern continents were collected into a single continent called Gondwana. Gondwana started the period in the equatorial latitudes and, as the period progressed, drifted toward the South Pole. Early in the Ordovician the continents Laurentia, Siberia and Baltica were still independent continents (since the break-up of the supercontinent Pannotia earlier), but Baltica began to move toward Laurentia later in the period, causing the Iapetus Ocean to shrink between them. Also, Avalonia broke free from Gondwana and began to head north toward Laurentia. The Rheic Ocean was formed as a result of this. By the end of the period, Gondwana had neared or approached the pole and was largely glaciated.

paragraph_text: At the time of the Berlin Conference, Africa contained one-fifth of the world’s population living in one-quarter of the world’s land area. However, from Europe's perspective, they were dividing an unknown continent. European countries established a few coastal colonies in Africa by the mid-nineteenth century, which included Cape Colony (Great Britain), Angola (Portugal), and Algeria (France), but until the late nineteenth century Europe largely traded with free African states without feeling the need for territorial possession. Until the 1880s most of Africa remained unchartered, with western maps from the period generally showing blank spaces for the continent’s interior.

paragraph_text: Filippo Brunelleschi (Italian: (fiˈlippo brunelˈleski); 1377 -- April 15, 1446) was an Italian designer and a key figure in architecture, recognised to be the first modern engineer, planner and sole construction supervisor. He was one of the founding fathers of the Renaissance. He is generally well known for developing a technique for linear perspective in art and for building the dome of the Florence Cathedral. Heavily dependent on mirrors and geometry, to ``reinforce Christian spiritual reality '', his formulation of linear perspective governed pictorial depiction of space until the late 19th century. It also had the most profound -- and quite unanticipated -- influence on the rise of modern science. His accomplishments also include other architectural works, sculpture, mathematics, engineering, and ship design. His principal surviving works are to be found in Florence, Italy. Unfortunately, his two original linear perspective panels have been lost.

paragraph_text: She began playing reggae music in Japanese clubs in 1996. Her 2002 debut single, "The Perfect Vision", went on to sell over 500,000 copies.

paragraph_text: The Renaissance (UK: / rɪˈneɪsəns /, US: / rɛnəˈsɑːns /) is a period in European history, covering the span between the 14th and 17th centuries. It is an extension of the Middle Ages, and is bridged by the Age of Enlightenment to modern history. It grew in fragments, with the very first traces found seemingly in Italy, coming to cover much of Europe, for some scholars marking the beginning of the modern age.

paragraph_text: In 1482, the Portuguese came to the continent for increased trade. They built the Castle of Elmina, the first European settlement on the Gold Coast. From here they acquired slaves and gold in trade for European goods, such as metal knives, beads, mirrors, rum, and guns. News of the successful trading spread quickly, and British, Dutch, Danish, Prussian and Swedish traders arrived as well. The European traders built several forts along the coastline. The Gold Coast had long been a name for the region used by Europeans because of the large gold resources found in the area. The slave trade was the principal exchange and major part of the economy for many years. In this period, European nations began to explore and colonize the Americas. Soon the Portuguese and Spanish began to export African slaves to the Caribbean, and North and South America. The Dutch and British also entered the slave trade, at first supplying markets in the Caribbean and on the Caribbean coast of South America.

paragraph_text: The Hohtälli is a mountain of the Swiss Pennine Alps, located southeast of Zermatt in the canton of Valais. It lies on the range that separates the Findel Glacier from the Gorner Glacier, between the Gornergrat and the Stockhorn. Its summit has an elevation of 3,275 metres and includes a cable car station. The Hohtälli is part of a ski area and features several ski runs leading down the mountain.

paragraph_text: The African Great Lakes region, which Kenya is a part of, has been inhabited by humans since the Lower Paleolithic period. By the first millennium AD, the Bantu expansion had reached the area from West - Central Africa. The borders of the modern state consequently comprise the crossroads of the Niger - Congo, Nilo - Saharan and Afroasiatic areas of the continent, representing most major ethnolinguistic groups found in Africa. Bantu and Nilotic populations together constitute around 97% of the nation's residents. European and Arab presence in coastal Mombasa dates to the Early Modern period; European exploration of the interior began in the 19th century. The British Empire established the East Africa Protectorate in 1895, which starting in 1920 gave way to the Kenya Colony. Kenya obtained independence in December 1963, but remained a member of the Commonwealth of Nations. Following a referendum in August 2010 and adoption of a new constitution, Kenya is now divided into 47 semi-autonomous counties, governed by elected governors.

paragraph_text: Satire on False Perspective is the title of an engraving produced by William Hogarth in 1754 for his friend Joshua Kirby's pamphlet on linear perspective.

paragraph_text: The period saw several important technical innovations, like the principle of linear perspective found in the work of Masaccio, and later described by Brunelleschi. Greater realism was also achieved through the scientific study of anatomy, championed by artists like Donatello. This can be seen particularly well in his sculptures, inspired by the study of classical models. As the centre of the movement shifted to Rome, the period culminated in the High Renaissance masters da Vinci, Michelangelo and Raphael.

paragraph_text: He was educated at Brighton College and Corpus Christi College, Oxford. After a period of study at Ripon College Cuddesdon he was ordained in 1937 and began his career with a curacy at "St Francis of Assisi, West Bromwich " followed by a period as Vicar of "St Matthias, Colindale". In 1951 he began a long association with the Bedford area, being successively Rural Dean, Archdeacon of Bedford and then Suffragan Bishop. He died in post on 25 October 1976.

paragraph_text: The Gornergrat (; ) is a rocky ridge of the Pennine Alps, overlooking the Gorner Glacier south-east of Zermatt in Switzerland. It can be reached from Zermatt by the Gornergrat rack railway (GGB), the highest open-air railway in Europe. Between the Gornergrat railway station () and the summit is the Kulm Hotel () hosting the new Project "Stellarium Gornergrat" and until 2010 the "Kölner Observatorium für SubMillimeter Astronomie" KOSMA and before that (until 2005) the Gornergrat Infrared Telescope.

paragraph_text: European culture began to make an impact on Chinese art during this period. The Jesuit priest Matteo Ricci visited Nanjing with many Western artworks, which were influential in showing different techniques of perspective and shading.

paragraph_text: The Thurian Age is a specific epoch in the fictional timeline used by Robert E. Howard in his Kull stories. It predates the Hyborian Age of the Conan the Barbarian stories and is known to them as the "Pre-Cataclysmic Age". The main continent is called Thuria, although smaller continents such as Atlantis and an unnamed eastern continent exist, as do several island chains. Most of the world is unexplored wilderness inhabited by "scattered clans and tribes of primitive savages." The boundary between the two ages is marked by the "Great Cataclysm," which might have taken place as early as ca. 35,000 to 40,000 B.C, or as recently as 18,000 B.C. depending on the sources considered. When Robert E. Howard began to chronicle the adventures of Conan the Cimmerian, in the early 1930s, he prepared a fictional history of the Hyborian Age which he had created. That "history" dealt not only with the period during and after Conan's life, but also with events some eight thousand years earlier, during the Thurian civilization which produced King Kull, an exiled warrior from Atlantis, in the days before his continent sank into the surging seas.

Question: In what area did the period of history, in which linear perspective was perfected, begin on the continent which contains the ridge known as the Gornergrat?
Answer: seemingly in Italy