Problem: Madonna (entertainer):

Madonna's use of sexual imagery has benefited her career and catalyzed public discourse on sexuality and feminism. As Roger Chapman documents in Culture Wars: An Encyclopedia of Issues, Viewpoints, and Voices, Volume 1 (2010), she has drawn frequent condemnation from religious organizations, social conservatives and parental watchdog groups for her use of explicit, sexual imagery and lyrics, religious symbolism, and otherwise "irreverent" behavior in her live performances. The Times wrote that she had "started a revolution amongst women in music ... Her attitudes and opinions on sex, nudity, style and sexuality forced the public to sit up and take notice." Professor John Fiske noted that the sense of empowerment that Madonna offers is inextricably connected with the pleasure of exerting some control over the meanings of self, of sexuality, and of one's social relations. In Doing Gender in Media, Art and Culture (2009), the authors noted that Madonna, as a female celebrity, performer, and pop icon, is able to unsettle standing feminist reflections and debates. According to lesbian feminist Sheila Jeffreys, Madonna represents woman's occupancy of what Monique Wittig calls the category of sex, as powerful, and appears to gleefully embrace the performance of the sexual corvee allotted to women. Professor Sut Jhally has referred to Madonna as "an almost sacred feminist icon."

Who started a revolution in music with women?
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A: Madonna

Problem: Safari and Mobile Safari were likewise always included with OS X and iOS respectively, so, similarly, they were originally funded by sales of Apple computers and mobile devices, and formed part of the overall Apple experience to customers.
What do the OS X and i OS provide?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the late 13th and early 14th centuries, a process took place primarily in Italy but partly also in the Empire that historians have termed a 'commercial revolution'. Among the innovations of the period were new forms of partnership and the issuing of insurance, both of which contributed to reducing the risk of commercial ventures; the bill of exchange and other forms of credit that circumvented the canonical laws for gentiles against usury, and eliminated the dangers of carrying bullion; and new forms of accounting, in particular double-entry bookkeeping, which allowed for better oversight and accuracy.
In which country did the so-called 'commercial revolution' never take place?
A: unanswerable

Context and question: With the majority of Nigeria's populace in the rural areas, the major languages of communication in the country remain indigenous languages. Some of the largest of these, notably Yoruba and Igbo, have derived standardised languages from a number of different dialects and are widely spoken by those ethnic groups. Nigerian Pidgin English, often known simply as 'Pidgin' or 'Broken' (Broken English), is also a popular lingua franca, though with varying regional influences on dialect and slang. The pidgin English or Nigerian English is widely spoken within the Niger Delta Regions, predominately in Warri, Sapele, Port Harcourt, Agenebode, Ewu, and Benin City.
What type of languages are the most popular in Nigeria?
Answer: indigenous

Question: In 2008, Houston received top ranking on Kiplinger's Personal Finance Best Cities of 2008 list, which ranks cities on their local economy, employment opportunities, reasonable living costs, and quality of life. The city ranked fourth for highest increase in the local technological innovation over the preceding 15 years, according to Forbes magazine. In the same year, the city ranked second on the annual Fortune 500 list of company headquarters, first for Forbes magazine's Best Cities for College Graduates, and first on their list of Best Cities to Buy a Home. In 2010, the city was rated the best city for shopping, according to Forbes.
Is there an answer to this question: Where did Forbes magazine place Texas for technological innovation?

Answer: unanswerable

Melbourne is an international cultural centre, with cultural endeavours spanning major events and festivals, drama, musicals, comedy, music, art, architecture, literature, film and television. The climate, waterfront location and nightlife make it one of the most vibrant destinations in Australia. For five years in a row (as of 2015) it has held the top position in a survey by The Economist Intelligence Unit of the world's most liveable cities on the basis of a number of attributes which include its broad cultural offerings. The city celebrates a wide variety of annual cultural events and festivals of all types, including Australia's largest free community festivalMoomba, the Melbourne International Arts Festival, Melbourne International Film Festival, Melbourne International Comedy Festival and the Melbourne Fringe Festival. The culture of the city is an important drawcard for tourists, of which just under two million international overnight visitors and 57.7 million domestic overnight visited during the year ending March 2014.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which factors make Melbourne one of the moust vibrant destinations in Australia?
Ah, so..
The climate, waterfront location and nightlife