This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Q: The domestic TV BBC television channels are broadcast without any commercial advertising and collectively they account for more than 30% of all UK viewing. The services are funded by a television licence.

A: What percentage of viewership across the UK is constituted by the BBC?
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Q: The brushless wound-rotor synchronous doubly-fed (BWRSDF) machine is the only electric machine with a truly dual ported transformer circuit topology (i.e., both ports independently excited with no short-circuited port). The dual ported transformer circuit topology is known to be unstable and requires a multiphase slip-ring-brush assembly to propagate limited power to the rotor winding set. If a precision means were available to instantaneously control torque angle and slip for synchronous operation during motoring or generating while simultaneously providing brushless power to the rotor winding set, the active current of the BWRSDF machine would be independent of the reactive impedance of the transformer circuit and bursts of torque significantly higher than the maximum operating torque and far beyond the practical capability of any other type of electric machine would be realizable. Torque bursts greater than eight times operating torque have been calculated.

A: What is the only device with dual ported transformer circuit topology?
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Q: Elliot Sperling, a specialist of Indian studies and the director of the Tibetan Studies program at Indiana University’s Department of Central Eurasia Studies, writes that "the idea that Tibet became part of China in the 13th century is a very recent construction." He writes that Chinese writers of the early 20th century were of the view that Tibet was not annexed by China until the Manchu Qing dynasty invasion during the 18th century. He also states that Chinese writers of the early 20th century described Tibet as a feudal dependency of China, not an integral part of it. Sperling states that this is because "Tibet was ruled as such, within the empires of the Mongols and the Manchus" and also that "China's intervening Ming dynasty ... had no control over Tibet." He writes that the Ming relationship with Tibet is problematic for China’s insistence of its unbroken sovereignty over Tibet since the 13th century. As for the Tibetan view that Tibet was never subject to the rule of the Yuan or Qing emperors of China, Sperling also discounts this by stating that Tibet was "subject to rules, laws and decisions made by the Yuan and Qing rulers" and that even Tibetans described themselves as subjects of these emperors.

A:
Who said Tibet  wasn't an integral part of of China?
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