Input: Nanjing
As the center of the empire, early-Ming Nanjing had worldwide connections. It was home of the admiral Zheng He, who went to sail the Pacific and Indian Oceans, and it was visited by foreign dignitaries, such as a king from Borneo (Boni ), who died during his visit to China in 1408. The Tomb of the King of Boni, with a spirit way and a tortoise stele, was discovered in Yuhuatai District (south of the walled city) in 1958, and has been restored.

What Admiral called Nanjing his home?
Output: admiral Zheng He

Input: Article: By developing commercial centres and routes, encouraging people to extend the area of cultivated land in the country and international trade through its dominions, the state performed basic economic functions in the Empire. But in all this the financial and political interests of the state were dominant. Within the social and political system they were living in Ottoman administrators could not have comprehended or seen the desirability of the dynamics and principles of the capitalist and mercantile economies developing in Western Europe.

Now answer this question: The expansion of international trade through the Empire was the result of what?

Output: developing commercial centres and routes

Article: Everton hold the record for the most seasons in England's top tier (Division One/Premier League), at 111 seasons out of 114 as of 201415 (the club played in Division 2 in 193031 and from 195154). They are one of seven teams to have played all 22 seasons of the Premier League since its inception in August 1992 the others being Arsenal, Aston Villa, Chelsea, Liverpool, Manchester United, and Tottenham Hotspur. Everton against Aston Villa is the most played fixture in England's top flight, as of the 201213 season the two founder members of the Football League have played a record 196 league games.

Question: How many other teams have played all 22 seasons in the Premier League since its inception?
Ans: seven

Here is a question about this article: In addition, land availability has a large effect on the available solar energy because solar panels can only be set up on land that is unowned and suitable for solar panels. Roofs have been found to be a suitable place for solar cells, as many people have discovered that they can collect energy directly from their homes this way. Other areas that are suitable for solar cells are lands that are unowned by businesses where solar plants can be established.
What is the answer to this question: Why does land availability have an effect on solar energy?
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So... solar panels can only be set up on land that is unowned and suitable for solar panels

The problem: Answer a question about this article:
Adult contemporary R&B may be played on both soft AC stations and urban AC. It is a form of neo soul R&B that places emphasis on songcraft and sophistication. As the use of drum machines, synthesizers, and sequencers dominates R&B-rooted music, adult contemporary R&B tends to take most of its cues from the more refined strains of 1970s soul, such as smooth soul, Philly soul and quiet storm. Classic songwriting touches and organic-leaning instrumentation, often featuring string arrangements and horn charts, were constants.
During what decade was smooth soul popular?
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The answer: 1970s

The problem: Answer a question about this article:
At the same time, some Alsatians were in opposition to the Jacobins and sympathetic to the invading forces of Austria and Prussia who sought to crush the nascent revolutionary republic. Many of the residents of the Sundgau made "pilgrimages" to places like Mariastein Abbey, near Basel, in Switzerland, for baptisms and weddings. When the French Revolutionary Army of the Rhine was victorious, tens of thousands fled east before it. When they were later permitted to return (in some cases not until 1799), it was often to find that their lands and homes had been confiscated. These conditions led to emigration by hundreds of families to newly vacant lands in the Russian Empire in 18034 and again in 1808. A poignant retelling of this event based on what Goethe had personally witnessed can be found in his long poem Hermann and Dorothea.
What was the name of the poem by Goethe?
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The answer:
Hermann and Dorothea