Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In December 2011, Xinhua stated that "[t]he basic structure of the Beidou system has now been established, and engineers are now conducting comprehensive system test and evaluation. The system will provide test-run services of positioning, navigation and time for China and the neighboring areas before the end of this year, according to the authorities." The system became operational in the China region that same month. The global navigation system should be finished by 2020. As of December 2012, 16 satellites for BeiDou-2 have been launched, 14 of them are in service.
How many satellites have been launched as of November, 2013?
A: unanswerable

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The republic was a confederation of seven provinces, which had their own governments and were very independent, and a number of so-called Generality Lands. The latter were governed directly by the States General (Staten-Generaal in Dutch), the federal government. The States General were seated in The Hague and consisted of representatives of each of the seven provinces. The provinces of the republic were, in official feudal order:
Where was the federal government seated?
A: unanswerable

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The 19th century also saw the use of red in art to create specific emotions, not just to imitate nature. It saw the systematic study of color theory, and particularly the study of how complementary colors such as red and green reinforced each other when they were placed next to each other. These studies were avidly followed by artists such as Vincent van Gogh. Describing his painting, The Night Cafe, to his brother Theo in 1888, Van Gogh wrote: "I sought to express with red and green the terrible human passions. The hall is blood red and pale yellow, with a green billiard table in the center, and four lamps of lemon yellow, with rays of orange and green. Everywhere it is a battle and antithesis of the most different reds and greens."
What occurred when red and green were put next to one another?
A: red and green reinforced each other

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Grey-box testing (American spelling: gray-box testing) involves having knowledge of internal data structures and algorithms for purposes of designing tests, while executing those tests at the user, or black-box level. The tester is not required to have full access to the software's source code.[not in citation given] Manipulating input data and formatting output do not qualify as grey-box, because the input and output are clearly outside of the "black box" that we are calling the system under test. This distinction is particularly important when conducting integration testing between two modules of code written by two different developers, where only the interfaces are exposed for test.
The tester is required to have full access to what piece of information?
A:
unanswerable