Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Slavic studies began as an almost exclusively linguistic and philological enterprise. As early as 1833, Slavic languages were recognized as Indo-European.
What were Indo-European studies recognized as?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Leibniz describes a space that exists only as a relation between objects, and which has no existence apart from the existence of those objects. Motion exists only as a relation between those objects. Newtonian space provided the absolute frame of reference within which objects can have motion. In Newton's system, the frame of reference exists independently of the objects contained within it. These objects can be described as moving in relation to space itself. For many centuries, the evidence of a concave water surface held authority.
What is dependent on the frame of refrence in Newtonian space?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Estonia has pursued the development of the e-state and e-government. Internet voting is used in elections in Estonia. The first internet voting took place in the 2005 local elections and the first in a parliamentary election was made available for the 2007 elections, in which 30,275 individuals voted over the internet. Voters have a chance to invalidate their electronic vote in traditional elections, if they wish to. In 2009 in its eighth Worldwide Press Freedom Index, Reporters Without Borders ranked Estonia sixth out of 175 countries. In the first ever State of World Liberty Index report, Estonia was ranked first out of 159 countries.
What year did the first internet vote occur in Estonia parliamentary elections?
A: 2007

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Organizations including Viacom, Mediaset, and the English Premier League have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material. Viacom, demanding $1 billion in damages, said that it had found more than 150,000 unauthorized clips of its material on YouTube that had been viewed "an astounding 1.5 billion times". YouTube responded by stating that it "goes far beyond its legal obligations in assisting content owners to protect their works".
How many unauthorized clips did Viacom allegedly find on youtube that infringed its copyrights?
A:
150,000