Input: Geological history of Earth
A global drop in sea level at the end of the Devonian reversed early in the Carboniferous; this created the widespread epicontinental seas and carbonate deposition of the Mississippian. There was also a drop in south polar temperatures; southern Gondwana was glaciated throughout the period, though it is uncertain if the ice sheets were a holdover from the Devonian or not. These conditions apparently had little effect in the deep tropics, where lush coal swamps flourished within 30 degrees of the northernmost glaciers. A mid-Carboniferous drop in sea-level precipitated a major marine extinction, one that hit crinoids and ammonites especially hard. This sea-level drop and the associated unconformity in North America separate the Mississippian Period from the Pennsylvanian period.

The Pennsylvania period is separated by the drop in Carboniferous era sea levels from what other period?
Output: Mississippian Period

Input: Article: A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.

Now answer this question: A register of a CPU keeps track of what?

Output: which location in memory the next instruction is to be read from

Article: Britain now threatened to withdraw its subsidies if Prussia didn't consider offering concessions to secure peace. As the Prussian armies had dwindled to just 60,000 men and with Berlin itself under siege, Frederick's survival was severely threatened. Then on 5 January 1762 the Russian Empress Elizabeth died. Her Prussophile successor, Peter III, at once recalled Russian armies from Berlin (see: the Treaty of Saint Petersburg (1762)) and mediated Frederick's truce with Sweden. He also placed a corps of his own troops under Frederick's command This turn of events has become known as the Miracle of the House of Brandenburg. Frederick was then able to muster a larger army of 120,000 men and concentrate it against Austria. He drove them from much of Saxony, while his brother Henry won a victory in Silesia in the Battle of Freiberg (29 October 1762). At the same time, his Brunswick allies captured the key town of Gottingen and compounded this by taking Cassel.

Question: How many troops did Frederick have left?
Ans: 60,000 men

Here is a question about this article: Symbiosis played a major role in the co-evolution of flowering plants and the animals that pollinate them. Many plants that are pollinated by insects, bats, or birds have highly specialized flowers modified to promote pollination by a specific pollinator that is also correspondingly adapted. The first flowering plants in the fossil record had relatively simple flowers. Adaptive speciation quickly gave rise to many diverse groups of plants, and, at the same time, corresponding speciation occurred in certain insect groups. Some groups of plants developed nectar and large sticky pollen, while insects evolved more specialized morphologies to access and collect these rich food sources. In some taxa of plants and insects the relationship has become dependent, where the plant species can only be pollinated by one species of insect.
What is the answer to this question: What did some plants produce when flowers became less simple?
****
So... nectar and large sticky pollen

The problem: Answer a question about this article:
The Premier League sends representatives to UEFA's European Club Association, the number of clubs and the clubs themselves chosen according to UEFA coefficients. For the 201213 season the Premier League has 10 representatives in the Association: Arsenal, Aston Villa, Chelsea, Everton, Fulham, Liverpool, Manchester City, Manchester United, Newcastle United and Tottenham Hotspur. The European Club Association is responsible for electing three members to UEFA's Club Competitions Committee, which is involved in the operations of UEFA competitions such as the Champions League and UEFA Europa League.
Who decides on how many Premeir League representatives there are for the European Club Association?
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The answer: the number of clubs and the clubs themselves chosen according to UEFA coefficients.

The problem: Answer a question about this article:
In 1927, the Kuomintang (KMT; Nationalist Party) under Generalissimo Chiang Kai-shek again established Nanjing as the capital of the Republic of China, and this became internationally recognized once KMT forces took Beijing in 1928. The following decade is known as the Nanking decade.
When was Nanjing re-established as the capital of the Republic of China?
****
The answer:
1927