Input: Article: After the failed union of Sweden and Norway of 13191365, the pan-Scandinavian Kalmar Union was instituted in 1397. The Swedes were reluctant members of the Danish-dominated union from the start. In an attempt to subdue the Swedes, King Christian II of Denmark had large numbers of the Swedish aristocracy killed in the Stockholm Bloodbath of 1520. Yet this measure only led to further hostilities, and Sweden broke away for good in 1523. Norway, on the other hand, became an inferior party of the union and remained united with Denmark until 1814.

Now answer this question: Denmark and Norway remained in the Kalmar Union until what year?

Output: 1814

Article: All YouTube users can upload videos up to 15 minutes each in duration. Users who have a good track record of complying with the site's Community Guidelines may be offered the ability to upload videos up to 12 hours in length, which requires verifying the account, normally through a mobile phone. When YouTube was launched in 2005, it was possible to upload long videos, but a ten-minute limit was introduced in March 2006 after YouTube found that the majority of videos exceeding this length were unauthorized uploads of television shows and films. The 10-minute limit was increased to 15 minutes in July 2010. If an up-to-date browser version is used, videos greater than 20 GB can be uploaded.

Question: What is the maximum length of a video on youtube?
Ans: 12 hours

Here is a question about this article: Among predators there is a large degree of specialization. Many predators specialize in hunting only one species of prey. Others are more opportunistic and will kill and eat almost anything (examples: humans, leopards, dogs and alligators). The specialists are usually particularly well suited to capturing their preferred prey. The prey in turn, are often equally suited to escape that predator. This is called an evolutionary arms race and tends to keep the populations of both species in equilibrium. Some predators specialize in certain classes of prey, not just single species. Some will switch to other prey (with varying degrees of success) when the preferred target is extremely scarce, and they may also resort to scavenging or a herbivorous diet if possible.[citation needed]
What is the answer to this question: What is the purpose of an evolutionary arms race?
****
So... keep the populations of both species in equilibrium

The problem: Answer a question about this article:
Prior to Mendel's work, the dominant theory of heredity was one of blending inheritance, which suggested that each parent contributed fluids to the fertilisation process and that the traits of the parents blended and mixed to produce the offspring. Charles Darwin developed a theory of inheritance he termed pangenesis, which used the term gemmule to describe hypothetical particles that would mix during reproduction. Although Mendel's work was largely unrecognized after its first publication in 1866, it was 'rediscovered' in 1900 by three European scientists, Hugo de Vries, Carl Correns, and Erich von Tschermak, who claimed to have reached similar conclusions in their own research.
What year was Mendel's work first published?
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The answer: 1866

Problem: Please answer a question about the following article about Late Middle Ages:
The ideas of the Italian Renaissance were slow to cross the Alps into northern Europe, but important artistic innovations were made also in the Low Countries. Though not as previously believed the inventor of oil painting, Jan van Eyck was a champion of the new medium, and used it to create works of great realism and minute detail. The two cultures influenced each other and learned from each other, but painting in the Netherlands remained more focused on textures and surfaces than the idealized compositions of Italy.
Jan van Eyck's paintings are known for what characteristics?
A: great realism and minute detail

Question: Read this and answer the question

Spanish Supreme Court is the highest court for all cases in Spain (both private and public). Only those cases related to human rights can be appealed at the Constitutional Court (which also decides about acts accordance with Spanish Constitution).
In Spain, high courts cannot create binding precedents; however, lower rank courts usually observe Supreme Court interpretations. In most private law cases, two Supreme Court judgements supporting a claim are needed to appeal at the Supreme Court.
Five sections form the Spanish Supreme court:

The Spanish Supreme Court hears all cases related to law in what areas?
Answer:
private and public