Problem: On the Origin of Species:

In January 1871, George Jackson Mivart's On the Genesis of Species listed detailed arguments against natural selection, and claimed it included false metaphysics. Darwin made extensive revisions to the sixth edition of the Origin (this was the first edition in which he used the word "evolution" which had commonly been associated with embryological development, though all editions concluded with the word "evolved"), and added a new chapter VII, Miscellaneous objections, to address Mivart's arguments.

When did Charles Darwin first use the word "evolution" in On the Origin of Species?
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A: the sixth edition


Problem: Indigenous genetic studies suggest that the first inhabitants of the Americas share a single ancestral population, one that developed in isolation, conjectured to be Beringia. The isolation of these peoples in Beringia might have lasted 10–20,000 years. Around 16,500 years ago, the glaciers began melting, allowing people to move south and east into Canada and beyond. These people are believed to have followed herds of now-extinct Pleistocene megafauna along ice-free corridors that stretched between the Laurentide and Cordilleran Ice Sheets.
When did the glaciers begin to melt?
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Answer: 16,500 years ago


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The direct object of the verb appears either in the accusative (for total objects) or in the partitive (for partial objects). The accusative coincides with the genitive in the singular and with nominative in the plural. Accusative vs. partitive case opposition of the object used with transitive verbs creates a telicity contrast, just as in Finnish. This is a rough equivalent of the perfective vs. imperfective aspect opposition.
What language does not have a telicity contrast?
A: unanswerable


Context and question: Few species of reptiles or amphibians are found in Great Britain or Ireland. Only three snakes are native to Great Britain: the common European adder, the grass snake and the smooth snake; none are native to Ireland. In general, Great Britain has slightly more variation and native wild life, with weasels, polecats, wildcats, most shrews, moles, water voles, roe deer and common toads also being absent from Ireland. This pattern is also true for birds and insects. Notable exceptions include the Kerry slug and certain species of wood lice native to Ireland but not Great Britain.
Which four snakes are native to Ireland?
Answer: unanswerable


Question: John was born to Henry II of England and Eleanor of Aquitaine on 24 December 1166. Henry had inherited significant territories along the Atlantic seaboard—Anjou, Normandy and England—and expanded his empire by conquering Brittany. Henry married the powerful Eleanor of Aquitaine, who reigned over the Duchy of Aquitaine and had a tenuous claim to Toulouse and Auvergne in southern France, in addition to being the former wife of Louis VII of France. The result was the Angevin Empire, named after Henry's paternal title as Count of Anjou and, more specifically, its seat in Angers.[nb 2] The Empire, however, was inherently fragile: although all the lands owed allegiance to Henry, the disparate parts each had their own histories, traditions and governance structures. As one moved south through Anjou and Aquitaine, the extent of Henry's power in the provinces diminished considerably, scarcely resembling the modern concept of an empire at all. Some of the traditional ties between parts of the empire such as Normandy and England were slowly dissolving over time. It was unclear what would happen to the empire on Henry's death. Although the custom of primogeniture, under which an eldest son would inherit all his father's lands, was slowly becoming more widespread across Europe, it was less popular amongst the Norman kings of England. Most believed that Henry would divide the empire, giving each son a substantial portion, and hoping that his children would continue to work together as allies after his death. To complicate matters, much of the Angevin empire was held by Henry only as a vassal of the King of France of the rival line of the House of Capet. Henry had often allied himself with the Holy Roman Emperor against France, making the feudal relationship even more challenging.
Is there an answer to this question: Who was Henry's ally?

Answer: Holy Roman Emperor


Problem: YouTube:

At the time of uploading a video, YouTube users are shown a message asking them not to violate copyright laws. Despite this advice, there are still many unauthorized clips of copyrighted material on YouTube. YouTube does not view videos before they are posted online, and it is left to copyright holders to issue a DMCA takedown notice pursuant to the terms of the Online Copyright Infringement Liability Limitation Act. Three successful complaints for copyright infringement against a user account will result in the account and all of its uploaded videos being deleted.

What does the Online Copyright Liability Limitation Infringement Act allow copyright holders to do?
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A:
unanswerable