Given the following passage  "Darwin's aims were twofold: to show that species had not been separately created, and to show that natural selection had been the chief agent of change. He knew that his readers were already familiar with the concept of transmutation of species from Vestiges, and his introduction ridicules that work as failing to provide a viable mechanism. Therefore, the first four chapters lay out his case that selection in nature, caused by the struggle for existence, is analogous to the selection of variations under domestication, and that the accumulation of adaptive variations provides a scientifically testable mechanism for evolutionary speciation.",  answer the following question. Note that the answer is present within the text.  Question: What being is the one that discussed natural selection?
Ans: Darwin

Given the following passage  "Gamal Abdel Nasser was born on 15 January 1918 in Bakos, Alexandria, the first son of Fahima and Abdel Nasser Hussein. Nasser's father was a postal worker born in Beni Mur in Upper Egypt and raised in Alexandria, and his mother's family came from Mallawi, el-Minya. His parents married in 1917, and later had two more boys, Izz al-Arab and al-Leithi. Nasser's biographers Robert Stephens and Said Aburish wrote that Nasser's family believed strongly in the "Arab notion of glory", since the name of Nasser's brother, Izz al-Arab, translates to "Glory of the Arabs"—a rare name in Egypt.",  answer the following question. Note that the answer is present within the text.  Question: What was the name of Fahima's middle son?
Ans: Izz al-Arab

Given the following passage  "Hydrogen is commonly used in power stations as a coolant in generators due to a number of favorable properties that are a direct result of its light diatomic molecules. These include low density, low viscosity, and the highest specific heat and thermal conductivity of all gases.",  answer the following question. Note that the answer is present within the text.  Question: A column of rising air that is used by birds to gain height is a?
Ans: thermal

Given the following passage  "Some computers are designed to distribute their work across several CPUs in a multiprocessing configuration, a technique once employed only in large and powerful machines such as supercomputers, mainframe computers and servers. Multiprocessor and multi-core (multiple CPUs on a single integrated circuit) personal and laptop computers are now widely available, and are being increasingly used in lower-end markets as a result.",  answer the following question. Note that the answer is present within the text.  Question: What refers to many things that are related?
Ans: Multiprocessor and multi-core (multiple CPUs