Input: Middle Ages
The large external sculptural schemes of Early Gothic churches gave way to more sculpture inside the building, as tombs became more elaborate and other features such as pulpits were sometimes lavishly carved, as in the Pulpit by Giovanni Pisano in Sant'Andrea. Painted or carved wooden relief altarpieces became common, especially as churches created many side-chapels. Early Netherlandish painting by artists such as Jan van Eyck (d. 1441) and Rogier van der Weyden (d. 1464) rivalled that of Italy, as did northern illuminated manuscripts, which in the 15th century began to be collected on a large scale by secular elites, who also commissioned secular books, especially histories. From about 1450 printed books rapidly became popular, though still expensive. There were around 30,000 different editions of incunabula, or works printed before 1500, by which time illuminated manuscripts were commissioned only by royalty and a few others. Very small woodcuts, nearly all religious, were affordable even by peasants in parts of Northern Europe from the middle of the 15th century. More expensive engravings supplied a wealthier market with a variety of images.

When did Rogier van der Weyden die?
Output: 1464

Input: Article: When Emperor Kammu moved the capital to Heian-kyo (Kyoto), which remained the imperial capital for the next 1,000 years, he did so not only to strengthen imperial authority but also to improve his seat of government geopolitically. Nara was abandoned after only 70 years in part due to the ascendancy of Dokyo and the encroaching secular power of the Buddhist institutions there. Kyoto had good river access to the sea and could be reached by land routes from the eastern provinces. The early Heian period (784967) continued Nara culture; the Heian capital was patterned on the Chinese Tang capital at Chang'an, as was Nara, but on a larger scale than Nara. Kammu endeavoured to improve the Tang-style administrative system which was in use. Known as the ritsuryo, this system attempted to recreate the Tang imperium in Japan, despite the "tremendous differences in the levels of development between the two countries". Despite the decline of the Taika-Taiho reforms, imperial government was vigorous during the early Heian period. Indeed, Kammu's avoidance of drastic reform decreased the intensity of political struggles, and he became recognized as one of Japan's most forceful emperors.

Now answer this question: What time period was the early Heian era?

Output: 784967

Article: A Japanese force was sent north to attack the Aleutian Islands. The next stage of the plan called for the capture of Midway, which would give him an opportunity to destroy Nimitz's remaining carriers. In May, Allied codebreakers discovered his intentions. Nagumo was again in tactical command but was focused on the invasion of Midway; Yamamoto's complex plan had no provision for intervention by Nimitz before the Japanese expected him. Planned surveillance of the U.S. fleet by long range seaplane did not happen (as a result of an abortive identical operation in March), so Fletcher's carriers were able to proceed to a flanking position without being detected. Nagumo had 272 planes operating from his four carriers, the U.S. 348 (115 land-based).

Question: How many planes did the United States have in the Battle of Midway?
Ans: 348

Here is a question about this article: Universities created by bilateral or multilateral treaties between states are intergovernmental. An example is the Academy of European Law, which offers training in European law to lawyers, judges, barristers, solicitors, in-house counsel and academics. EUCLID (Pole Universitaire Euclide, Euclid University) is chartered as a university and umbrella organisation dedicated to sustainable development in signatory countries, and the United Nations University engages in efforts to resolve the pressing global problems that are of concern to the United Nations, its peoples and member states. The European University Institute, a post-graduate university specialised in the social sciences, is officially an intergovernmental organisation, set up by the member states of the European Union.
What is the answer to this question: What type of school is the European University Institute?
****
So... post-graduate

The problem: Answer a question about this article:
An Internet service provider (ISP) is an organization that provides services for accessing, using, the Internet. Internet service providers may be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.
What forms can an isp be organized in?
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The answer: commercial, community-owned, non-profit, or otherwise privately owned

The problem: Answer a question about this article:
In terms of total number of ships, the Greek Merchant Navy stands at 4th worldwide, with 3,150 ships (741 of which are registered in Greece whereas the rest 2,409 in other ports). In terms of ship categories, Greece ranks first in both tankers and dry bulk carriers, fourth in the number of containers, and fifth in other ships. However, today's fleet roster is smaller than an all-time high of 5,000 ships in the late 1970s. Additionally, the total number of ships flying a Greek flag (includes non-Greek fleets) is 1,517, or 5.3% of the world's dwt (ranked 5th).
Where is the Greek Merchant Navy ranked?
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The answer:
4th worldwide