Problem: Please answer a question about the following article about Umayyad Caliphate:
Mu'awiyah introduced postal service, Abd al-Malik extended it throughout his empire, and Walid made full use of it. The Umayyad Caliph Abd al-Malik developed a regular postal service. Umar bin Abdul-Aziz developed it further by building caravanserais at stages along the Khurasan highway. Relays of horses were used for the conveyance of dispatches between the caliph and his agents and officials posted in the provinces. The main highways were divided into stages of 12 miles (19 km) each and each stage had horses, donkeys or camels ready to carry the post. Primarily the service met the needs of Government officials, but travellers and their important dispatches were also benefitted by the system. The postal carriages were also used for the swift transport of troops. They were able to carry fifty to a hundred men at a time. Under Governor Yusuf bin Umar, the postal department of Iraq cost 4,000,000 dirhams a year.
Who first brought a postal service into Umayyad lands?
A: Mu'awiyah


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The 50th anniversary of the novel's release was met with celebrations and reflections on its impact. Eric Zorn of the Chicago Tribune praises Lee's "rich use of language" but writes that the central lesson is that "courage isn't always flashy, isn't always enough, but is always in style". Jane Sullivan in the Sydney Morning Herald agrees, stating that the book "still rouses fresh and horrified indignation" as it examines morality, a topic that has recently become unfashionable. Chimamanda Ngozi Adichie writing in The Guardian states that Lee, rare among American novelists, writes with "a fiercely progressive ink, in which there is nothing inevitable about racism and its very foundation is open to question", comparing her to William Faulkner, who wrote about racism as an inevitability. Literary critic Rosemary Goring in Scotland's The Herald notes the connections between Lee and Jane Austen, stating the book's central theme, that "one’s moral convictions are worth fighting for, even at the risk of being reviled" is eloquently discussed.

Chimamanda Ngozi Adichie vompared Lee to whom?
Answer: William Faulkner


Problem: Notable Greek scientists of modern times include Dimitrios Galanos, Georgios Papanikolaou (inventor of the Pap test), Nicholas Negroponte, Constantin Carathéodory (known for the Carathéodory theorems and Carathéodory conjecture), Manolis Andronikos (discovered the tomb of Philip II of Macedon in Vergina), Michael Dertouzos, John Argyris, Panagiotis Kondylis, John Iliopoulos (2007 Dirac Prize for his contributions on the physics of the charm quark, a major contribution to the birth of the Standard Model, the modern theory of Elementary Particles), Joseph Sifakis (2007 Turing Award, the "Nobel Prize" of Computer Science), Christos Papadimitriou (2002 Knuth Prize, 2012 Gödel Prize), Mihalis Yannakakis (2005 Knuth Prize), Dimitri Nanopoulos and Helene Ahrweiler.
What Greek won the 2002 Knuth prize?
The answer is the following: Christos Papadimitriou


Investment in the city continued. The William Enston Home, a planned community for the city's aged and infirm, was built in 1889. An elaborate public building, the United States Post Office and Courthouse, was completed by the federal government in 1896 in the heart of the city. The Democrat-dominated state legislature passed a new constitution in 1895 that disfranchised blacks, effectively excluding them entirely from the political process, a second-class status that was maintained for more than six decades in a state that was majority black until about 1930.
The William Enston Home was built in what year?
1889.


Input: IBM
IBM has constantly evolved since its inception. Over the past decade, it has steadily shifted its business mix by exiting commoditizing markets such as PCs, hard disk drives and DRAMs and focusing on higher-value, more profitable markets such as business intelligence, data analytics, business continuity, security, cloud computing, virtualization and green solutions, resulting in a higher quality revenue stream and higher profit margins. IBM's operating margin expanded from 16.8% in 2004 to 24.3% in 2013, and net profit margins expanded from 9.0% in 2004 to 16.5% in 2013.

IBM focusing on markets like business continuity, business intelligence, security, and cloud computing is an example of IBM doing what?
Output: exiting commoditizing markets


Problem: Please answer a question about the following article about The Bronx:
The history of the Bronx during the 20th century may be divided into four periods: a boom period during 1900–29, with a population growth by a factor of six from 200,000 in 1900 to 1.3 million in 1930. The Great Depression and post World War II years saw a slowing of growth leading into an eventual decline. The mid to late century were hard times, as the Bronx declined 1950–85 from a predominantly moderate-income to a predominantly lower-income area with high rates of violent crime and poverty. The Bronx has experienced an economic and developmental resurgence starting in the late 1980s that continues into today.
What was the Bronx's population in 1900?
A:
200,000