The problem: Answer a question about this article:
In recent years there was a high demand for massively distributed databases with high partition tolerance but according to the CAP theorem it is impossible for a distributed system to simultaneously provide consistency, availability and partition tolerance guarantees. A distributed system can satisfy any two of these guarantees at the same time, but not all three. For that reason many NoSQL databases are using what is called eventual consistency to provide both availability and partition tolerance guarantees with a reduced level of data consistency.
What explains the difficulty in a system containing availability, consistency, and partition tolerance guarantees?
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The answer: the CAP theorem


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Egypt actively practices capital punishment. Egypt's authorities do not release figures on death sentences and executions, despite repeated requests over the years by human rights organisations. The United Nations human rights office and various NGOs expressed "deep alarm" after an Egyptian Minya Criminal Court sentenced 529 people to death in a single hearing on 25 March 2014. Sentenced supporters of former President Mohamed Morsi will be executed for their alleged role in violence following his ousting in July 2013. The judgment was condemned as a violation of international law. By May 2014, approximately 16,000 people (and as high as more than 40,000 by one independent count), mostly Brotherhood members or supporters, have been imprisoned after the coup  after the Muslim Brotherhood was labelled as terrorist organisation by the post-coup interim Egyptian government.
What former president's supporters are set to be executed?
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The answer: Mohamed Morsi


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The Suez crisis and the choice of Eden's successor led in 1957 to the first major personal criticism of the Queen. In a magazine, which he owned and edited, Lord Altrincham accused her of being "out of touch". Altrincham was denounced by public figures and slapped by a member of the public appalled by his comments. Six years later, in 1963, Macmillan resigned and advised the Queen to appoint the Earl of Home as prime minister, advice that she followed. The Queen again came under criticism for appointing the prime minister on the advice of a small number of ministers or a single minister. In 1965, the Conservatives adopted a formal mechanism for electing a leader, thus relieving her of involvement.
Aside from her choice of Eden's successor, what crisis caused Elizabeth to be criticized?
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The answer: Suez crisis


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Forests cover 24 percent of Oklahoma and prairie grasslands composed of shortgrass, mixed-grass, and tallgrass prairie, harbor expansive ecosystems in the state's central and western portions, although cropland has largely replaced native grasses. Where rainfall is sparse in the western regions of the state, shortgrass prairie and shrublands are the most prominent ecosystems, though pinyon pines, red cedar (junipers), and ponderosa pines grow near rivers and creek beds in the far western reaches of the panhandle. Southwestern Oklahoma contains many rare, disjunct species including sugar maple, bigtooth maple, nolina and southern live oak.
What types of trees grow near rivers in western Oklahoma?
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The answer:
pinyon pines, red cedar (junipers), and ponderosa pines