Problem: Sony Music Entertainment:

RCA/Jive Label Group CEO Barry Weiss left the company in March 2011 to become the new CEO of Island Def Jam and Universal Republic, which were both part of Universal Music Group. Weiss had been the RCA/Jive Label Group CEO since 2008 and was head of Jive Records since 1991.

Island Jam Def and Universal Republic were both part of what?
---
A: unanswerable

Problem: Houston is the seat of the internationally renowned Texas Medical Center, which contains the world's largest concentration of research and healthcare institutions. All 49 member institutions of the Texas Medical Center are non-profit organizations. They provide patient and preventive care, research, education, and local, national, and international community well-being. Employing more than 73,600 people, institutions at the medical center include 13 hospitals and two specialty institutions, two medical schools, four nursing schools, and schools of dentistry, public health, pharmacy, and virtually all health-related careers. It is where one of the firstand still the largestair emergency service, Life Flight, was created, and a very successful inter-institutional transplant program was developed. More heart surgeries are performed at the Texas Medical Center than anywhere else in the world.
How many for-profit organizations are members of the Medical Center?
---
Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
With the division of the Roman Empire, the Western Roman Empire lost contact with much of its past. In the Middle East, Greek philosophy was able to find some support under the newly created Arab Empire. With the spread of Islam in the 7th and 8th centuries, a period of Muslim scholarship, known as the Islamic Golden Age, lasted until the 13th century. This scholarship was aided by several factors. The use of a single language, Arabic, allowed communication without need of a translator. Access to Greek texts from the Byzantine Empire, along with Indian sources of learning, provided Muslim scholars a knowledge base to build upon.
How long did the Islamic Golden Age last?
A: until the 13th century

Context and question: I-94 (Edsel Ford Freeway) runs eastwest through Detroit and serves Ann Arbor to the west (where it continues to Chicago) and Port Huron to the northeast. The stretch of the current I-94 freeway from Ypsilanti to Detroit was one of America's earlier limited-access highways. Henry Ford built it to link the factories at Willow Run and Dearborn during World War II. A portion was known as the Willow Run Expressway. The I-96 freeway runs northwestsoutheast through Livingston, Oakland and Wayne counties and (as the Jeffries Freeway through Wayne County) has its eastern terminus in downtown Detroit.
Who built I-94?
Answer: Henry Ford

Question: Outward urban expansion is now prevented by the Metropolitan Green Belt, although the built-up area extends beyond the boundary in places, resulting in a separately defined Greater London Urban Area. Beyond this is the vast London commuter belt. Greater London is split for some purposes into Inner London and Outer London. The city is split by the River Thames into North and South, with an informal central London area in its interior. The coordinates of the nominal centre of London, traditionally considered to be the original Eleanor Cross at Charing Cross near the junction of Trafalgar Square and Whitehall, are approximately 513026N 000739W / 51.50722N 0.12750W / 51.50722; -0.12750.
Is there an answer to this question: What metropolitan area lies beyond the Metropolitan Green Belt?

Answer: London commuter belt

Problem: Great power:

Referring to great power relations pre-1960, Joshua Baron highlights that starting from around the 16th century and the rise of several European great powers, military conflicts and confrontations was the defining characteristic of diplomacy and relations between such powers. "Between 1500 and 1953, there were 64 wars in which at least one great power was opposed to another, and they averaged little more than five years in length. In approximately a 450-year time frame, on average at least two great powers were fighting one another in each and every year." Even during the period of Pax Britannica (or "the British Peace") between 1815 and 1914, war and military confrontations among the great powers was still a frequent occurrence. In fact, Joshua Baron points out that, in terms of militarized conflicts or confrontations, the UK led the way in this period with nineteen such instances against; Russia (8), France (5), Germany/Prussia (5) and Italy (1).

Between 1815-1914 what country had the most defining characteristics of diplomacy?
---
A:
unanswerable