Problem: Great Plains:

Much of the Great Plains became open range, or rangeland where cattle roamed free, hosting ranching operations where anyone was theoretically free to run cattle. In the spring and fall, ranchers held roundups where their cowboys branded new calves, treated animals and sorted the cattle for sale. Such ranching began in Texas and gradually moved northward. In 1866-95, cowboys herded 10 million cattle north to rail heads such as Dodge City, Kansas and Ogallala, Nebraska; from there, cattle were shipped eastward.

How many cowboys did it take to herd 10 million cattle north?
---
A: unanswerable

Problem: In modern times, a process of devolution in the United Kingdom has decentralised power once again. Since the 1997 referendums in Scotland and Wales and the Good Friday Agreement in Northern Ireland, three of the four constituent countries of the UK now have some level of autonomy. Government has been devolved to the Scottish Parliament, the National Assembly for Wales and the Northern Ireland Assembly. England does not have its own parliament and English affairs continue to be decided by the Westminster Parliament. In 1998 a set of eight unelected Regional assemblies, or chambers, was created to support the English Regional Development Agencies, but these were abolished between 2008 and 2010. The Regions of England continue to be used in certain governmental administrative functions.
What does the region of England continue to use?
---
Answer: certain governmental administrative functions

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Copper's greater conductivity versus other metals enhances the electrical energy efficiency of motors. This is important because motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Increasing the mass and cross section of copper in a coil increases the electrical energy efficiency of the motor. Copper motor rotors, a new technology designed for motor applications where energy savings are prime design objectives, are enabling general-purpose induction motors to meet and exceed National Electrical Manufacturers Association (NEMA) premium efficiency standards.
What property of copper increases the efficiency of electrical motors?
A: conductivity

Context and question: Popper played a vital role in establishing the philosophy of science as a vigorous, autonomous discipline within philosophy, through his own prolific and influential works, and also through his influence on his own contemporaries and students. Popper founded in 1946 the Department of Philosophy, Logic and Scientific Method at the London School of Economics and there lectured and influenced both Imre Lakatos and Paul Feyerabend, two of the foremost philosophers of science in the next generation of philosophy of science. (Lakatos significantly modified Popper's position,:1 and Feyerabend repudiated it entirely, but the work of both is deeply influenced by Popper and engaged with many of the problems that Popper set.)
What branch of philosophy did Popper advance the most?
Answer: philosophy of science

Question: This change is interesting from a sociolinguistic point of view because it has apparently happened relatively recently, in the 1970s, and was pioneered by older well-educated women from the upper middle classes. The lowering of the diphthongs has long been current in many Dutch dialects, and is comparable to the English Great Vowel Shift, and the diphthongisation of long high vowels in Modern High German, which centuries earlier reached the state now found in Polder Dutch. Stroop theorizes that the lowering of open-mid to open diphthongs is a phonetically "natural" and inevitable development and that Dutch, after having diphthongised the long high vowels like German and English, "should" have lowered the diphthongs like German and English as well.
Is there an answer to this question: What linguistic event in English could we parallel with the Dutch lowering of diphthongs?

Answer: English Great Vowel Shift

In December 2009, campaigners in the UK called on two leading high street retailers to stop selling clothes made with cotton which may have been picked by children. Anti-Slavery International and the Environmental Justice Foundation (EJF) accused H&M and Zara of using cotton suppliers in Bangladesh. It is also suspected that many of their raw materials originates from Uzbekistan, where children aged 10 are forced to work in the fields. The activists were calling to ban the use of Uzbek cotton and implement a "track and trace" systems to guarantee an ethical responsible source of the material.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What are activists trying to get implemented?
Ah, so..
"track and trace" systems