Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Various music journalists, critical theorists, and authors have deemed Madonna the most influential female recording artist of all time. Author Carol Clerk wrote that "during her career, Madonna has transcended the term 'pop star' to become a global cultural icon." Rolling Stone of Spain wrote that "She became the first viral Master of Pop in history, years before the Internet was massively used. Madonna was everywhere; in the almighty music television channels, 'radio formulas', magazine covers and even in bookshops. A pop dialectic, never seen since The Beatles's reign, which allowed her to keep on the edge of tendency and commerciality." Laura Barcella in her book Madonna and Me: Women Writers on the Queen of Pop (2012) wrote that "really, Madonna changed everything the musical landscape, the '80s look du jour, and most significantly, what a mainstream female pop star could (and couldn't) say, do, or accomplish in the public eye." William Langley from The Daily Telegraph felt that "Madonna has changed the world's social history, has done more things as more different people than anyone else is ever likely to." Alan McGee from The Guardian felt that Madonna is a post-modern art, the likes of which we will never see again. He further asserted that Madonna and Michael Jackson invented the terms Queen and King of Pop.
Who said that Madonna is like post-moderm art?
A: Alan McGee from The Guardian

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A wrestler may voluntarily submit by verbally informing the referee (usually used in moves such as the Mexican Surfboard, where all four limbs are incapacitated, making tapping impossible). Also, since Ken Shamrock (a legitimate UFC competitor in its early days) popularized it in 1997, a wrestler can indicate a voluntary submission by "tapping out", that is, tapping a free hand against the mat or against an opponent. Occasionally, a wrestler will reach for a rope (see rope breaks below), only to put their hand back on the mat so they can crawl towards the rope some more; this is not a submission, and the referee decides what their intent is.
What can a wrestler do to show a willing submission?
A: tapping out

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In many societies, however, a particular dialect, often the sociolect of the elite class, comes to be identified as the "standard" or "proper" version of a language by those seeking to make a social distinction, and is contrasted with other varieties. As a result of this, in some contexts the term "dialect" refers specifically to varieties with low social status. In this secondary sense of "dialect", language varieties are often called dialects rather than languages:
What is another term for secondary sense?
A: unanswerable

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Energy sources unsuitable for mobile power plants, such as nuclear power, renewable hydroelectricity, or wind power can be used. According to widely accepted global energy reserve statistics, the reserves of liquid fuel are much less than gas and coal (at 42, 167 and 416 years respectively). Most countries with large rail networks do not have significant oil reserves and those that did, like the United States and Britain, have exhausted much of their reserves and have suffered declining oil output for decades. Therefore, there is also a strong economic incentive to substitute other fuels for oil. Rail electrification is often considered an important route towards consumption pattern reform. However, there are no reliable, peer-reviewed studies available to assist in rational public debate on this critical issue, although there are untranslated Soviet studies from the 1980s.
Energy sources suitable for mobile power plants include what?
A:
unanswerable