Problem: Bird:

Since birds are highly visible and common animals, humans have had a relationship with them since the dawn of man. Sometimes, these relationships are mutualistic, like the cooperative honey-gathering among honeyguides and African peoples such as the Borana. Other times, they may be commensal, as when species such as the house sparrow have benefited from human activities. Several bird species have become commercially significant agricultural pests, and some pose an aviation hazard. Human activities can also be detrimental, and have threatened numerous bird species with extinction (hunting, avian lead poisoning, pesticides, roadkill, and predation by pet cats and dogs are common sources of death for birds).

What have threatened numerous bird species with extinction?
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A: Human activities

Problem: Kievan Rus%27:

In the northeast, Slavs from the Kievan region colonized the territory that later would become the Grand Duchy of Moscow by subjugating and merging with the Finnic tribes already occupying the area. The city of Rostov, the oldest centre of the northeast, was supplanted first by Suzdal and then by the city of Vladimir, which become the capital of Vladimir-Suzdal'. The combined principality of Vladimir-Suzdal asserted itself as a major power in Kievan Rus' in the late 12th century. In 1169 Prince Andrey Bogolyubskiy of Vladimir-Suzdal sacked the city of Kiev and took over the title of the ( /Velikiy Knyaz/Grand Prince or Grand Duke) to Vladimir, this way claiming the primacy in Rus'. Prince Andrey then installed his younger brother, who ruled briefly in Kiev while Andrey continued to rule his realm from Suzdal. In 1299, in the wake of the Mongol invasion, the metropolitan moved from Kiev to the city of Vladimir and Vladimir-Suzdal.

In what year did the mongol invasion begin?
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A: In 1299

Problem: Dell:

After several weeks of rumors, which started around January 11, 2013, Dell announced on February 5, 2013 that it had struck a $24.4 billion leveraged buyout deal, that would have delisted its shares from the NASDAQ and Hong Kong Stock Exchange and taken it private. Reuters reported that Michael Dell and Silver Lake Partners, aided by a $2 billion loan from Microsoft, would acquire the public shares at $13.65 apiece. The $24.4 billion buyout was projected to be the largest leveraged buyout backed by private equity since the 2007 financial crisis. It is also the largest technology buyout ever, surpassing the 2006 buyout of Freescale Semiconductor for $17.5 billion.

What was the value of Dell's buyout deal?
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A: $24.4 billion

Problem: Sichuan:

The rulers of the expansionist Qin dynasty, based in present-day Gansu and Shaanxi, were only the first strategists to realize that the area's military importance matched its commercial and agricultural significance. The Sichuan basin is surrounded by the Himalayas to the west, the Qin Mountains to the north, and mountainous areas of Yunnan to the south. Since the Yangtze flows through the basin and then through the perilous Yangzi Gorges to eastern and southern China, Sichuan was a staging area for amphibious military forces and a refuge for political refugees.[citation needed]

What surrounds the Sichuan basin to the east?
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A:
unanswerable