Input: Read this: Following the death of Grand Prince Igor in 945, his wife Olga ruled as regent in Kiev until their son Sviatoslav reached maturity (ca. 963). His decade-long reign over Rus' was marked by rapid expansion through the conquest of the Khazars of the Pontic steppe and the invasion of the Balkans. By the end of his short life, Sviatoslav carved out for himself the largest state in Europe, eventually moving his capital from Kiev to Pereyaslavets on the Danube in 969. In contrast with his mother's conversion to Christianity, Sviatoslav, like his druzhina, remained a staunch pagan. Due to his abrupt death in an ambush in 972, Sviatoslav's conquests, for the most part, were not consolidated into a functioning empire, while his failure to establish a stable succession led to a fratricidal feud among his sons, which resulted in two of his three sons being killed.
Question: What year was Sviatoslav's empire consolidated?

Output: unanswerable

QUES: Corporations and legislatures take different types of preventative measures to deter copyright infringement, with much of the focus since the early 1990s being on preventing or reducing digital methods of infringement. Strategies include education, civil & criminal legislation, and international agreements, as well as publicizing anti-piracy litigation successes and imposing forms of digital media copy protection, such as controversial DRM technology and anti-circumvention laws, which limit the amount of control consumers have over the use of products and content they have purchased.

What does DRM and anti-circumvention laws do?
What is the answer?
ANS: limit the amount of control consumers have

QUES: The typical image of migration is of northern landbirds, such as swallows (Hirundinidae) and birds of prey, making long flights to the tropics. However, many Holarctic wildfowl and finch (Fringillidae) species winter in the North Temperate Zone, in regions with milder winters than their summer breeding grounds. For example, the pink-footed goose Anser brachyrhynchus migrates from Iceland to Britain and neighbouring countries, whilst the dark-eyed junco Junco hyemalis migrates from subarctic and arctic climates to the contiguous United States and the American goldfinch from taiga to wintering grounds extending from the American South northwestward to Western Oregon. Migratory routes and wintering grounds are traditional and learned by young during their first migration with their parents. Some ducks, such as the garganey Anas querquedula, move completely or partially into the tropics. The European pied flycatcher Ficedula hypoleuca also follows this migratory trend, breeding in Asia and Europe and wintering in Africa.
Where do the dark-eyed junco migrate?

ANS: arctic climates to the contiguous United States

The Commander-in-Chief of the Canadian Armed Forces is the reigning Canadian monarch, Queen Elizabeth II, who is represented by the Governor General of Canada. The Canadian Armed Forces is led by the Chief of the Defence Staff, who is advised and assisted by the Armed Forces Council.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who currently is the Assistant-in-Chief of the Canadian Armed Forces?
Ah, so.. unanswerable

Question: Some early male settlers married Indigenous American women and had informal unions with them. Early contact between Indigenous Americans and Europeans was often charged with tension, but also had moments of friendship, cooperation, and intimacy. Marriages took place in both English and Latin colonies between European men and Native women. For instance, on April 5, 1614, Pocahontas, a Powhatan woman in present-day Virginia, married the Englishman John Rolfe of Jamestown. Their son Thomas Rolfe was an ancestor to many descendants in First Families of Virginia. As a result, English laws did not exclude people with some Indigenous American ancestry from being considered English or white.
Try to answer this question if possible: Who was an ancestor to many First Families of North Carolina?
Answer: unanswerable

Input: Read this: This meant that nearly one-third of the U.S. lending mechanism was frozen and continued to be frozen into June 2009. According to the Brookings Institution, the traditional banking system does not have the capital to close this gap as of June 2009: "It would take a number of years of strong profits to generate sufficient capital to support that additional lending volume". The authors also indicate that some forms of securitization are "likely to vanish forever, having been an artifact of excessively loose credit conditions". While traditional banks have raised their lending standards, it was the collapse of the shadow banking system that is the primary cause of the reduction in funds available for borrowing.
Question: What is the primary cause of the reduction in funds available for borrowing?

Output:
the collapse of the shadow banking system