Problem: Cotton:

While Brazil was fighting the US through the WTO's Dispute Settlement Mechanism against a heavily subsidized cotton industry, a group of four least-developed African countries Benin, Burkina Faso, Chad, and Mali also known as "Cotton-4" have been the leading protagonist for the reduction of US cotton subsidies through negotiations. The four introduced a "Sectoral Initiative in Favour of Cotton", presented by Burkina Faso's President Blaise Compaore during the Trade Negotiations Committee on 10 June 2003.

What was Brazil's argument against the US cotton industry?
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A: heavily subsidized

Problem: Influences also came to her from the art world, most notably through the works of Mexican artist Frida Kahlo. The music video of the song "Bedtime Story" featured images inspired by the paintings of Kahlo and Remedios Varo. Madonna is also a collector of Tamara de Lempicka's Art Deco paintings and has included them in her music videos and tours. Her video for "Hollywood" (2003) was an homage to the work of photographer Guy Bourdin; Bourdin's son subsequently filed a lawsuit for unauthorised use of his father's work. Pop artist Andy Warhol's use of sadomasochistic imagery in his underground films were reflected in the music videos for "Erotica" and "Deeper and Deeper".
Her video Hollywood was a homage to which photographer?
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Answer: Guy Bourdin

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Cuba, like many Spanish territories, wanted to break free from Spain. A pro-independence movement in Cuba was supported by the U.S., and Cuban guerrilla leaders wanted annexation to the United States, but Cuban revolutionary leader Jose Marti called for Cuban nationhood. When the U.S. battleship Maine sank in Havana Harbor, the U.S. blamed Spain and the SpanishAmerican War broke out in 1898. After the U.S. won, Spain relinquished claim of sovereignty over territories, including Cuba. The U.S. administered Cuba as a protectorate until 1902. Several decades later in 1959, the corrupt Cuban government of U.S.-backed Fulgencio Batista was overthrown by Fidel Castro. Castro installed a MarxistLeninist government allied with the Soviet Union, which has been in power ever since.
When did Fulgencio Batista overthrow the Cuban government?
A: unanswerable

Context and question: Beginning in the late 1950s and 1960s, architectural phenomenology emerged as an important movement in the early reaction against modernism, with architects like Charles Moore in the USA, Christian Norberg-Schulz in Norway, and Ernesto Nathan Rogers and Vittorio Gregotti in Italy, who collectively popularized an interest in a new contemporary architecture aimed at expanding human experience using historical buildings as models and precedents. Postmodernism produced a style that combined contemporary building technology and cheap materials, with the aesthetics of older pre-modern and non-modern styles, from high classical architecture to popular or vernacular regional building styles. Robert Venturi famously defined postmodern architecture as a "decorated shed" (an ordinary building which is functionally designed inside and embellished on the outside), and upheld it against modernist and brutalist "ducks" (buildings with unnecessarily expressive tectonic forms).
What were the architectural phenomenologists hoping to expand?
Answer: human experience

Question: The 1989 film Back to the Future Part II depicts the Chicago Cubs defeating a baseball team from Miami in the 2015 World Series, ending the longest championship drought in all four of the major North American professional sports leagues. In 2015, the Miami Marlins failed to make the playoffs and were able to make it to the 2015 National League Wild Card round and move on to the 2015 National League Championship Series by October 21, 2015, the date where protagonist Marty McFly traveled to the future in the film. However, it was on October 21 that the Cubs were swept by the New York Mets in the NLCS.
Is there an answer to this question: What day were the Cubs swept by the New York Mets in the NLCS?

Answer: October 21

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In abstract algebra, more general structures are defined by relaxing some of the axioms defining a group. For example, if the requirement that every element has an inverse is eliminated, the resulting algebraic structure is called a monoid. The natural numbers N (including 0) under addition form a monoid, as do the nonzero integers under multiplication (Z {0}, ), see above. There is a general method to formally add inverses to elements to any (abelian) monoid, much the same way as (Q {0}, ) is derived from (Z {0}, ), known as the Grothendieck group. Groupoids are similar to groups except that the composition a b need not be defined for all a and b. They arise in the study of more complicated forms of symmetry, often in topological and analytical structures, such as the fundamental groupoid or stacks. Finally, it is possible to generalize any of these concepts by replacing the binary operation with an arbitrary n-ary one (i.e. an operation taking n arguments). With the proper generalization of the group axioms this gives rise to an n-ary group. The table gives a list of several structures generalizing groups.
What can be replaced to simplify abstract algebra concepts?
A:
the binary operation