Input: Read this: After the World Cup, the most important international football competitions are the continental championships, which are organised by each continental confederation and contested between national teams. These are the European Championship (UEFA), the Copa America (CONMEBOL), African Cup of Nations (CAF), the Asian Cup (AFC), the CONCACAF Gold Cup (CONCACAF) and the OFC Nations Cup (OFC). The FIFA Confederations Cup is contested by the winners of all six continental championships, the current FIFA World Cup champions and the country which is hosting the Confederations Cup. This is generally regarded as a warm-up tournament for the upcoming FIFA World Cup and does not carry the same prestige as the World Cup itself. The most prestigious competitions in club football are the respective continental championships, which are generally contested between national champions, for example the UEFA Champions League in Europe and the Copa Libertadores in South America. The winners of each continental competition contest the FIFA Club World Cup.
Question: What does CAF oppose?

Output: unanswerable

Input: Read this: Through most of Shell's early history, the Shell Oil Company business in the United States was substantially independent with its stock being traded on the NYSE and with little direct involvement from the group's central offices in the running of the American business. However, in 1984, Royal Dutch Shell made a bid to purchase those shares of Shell Oil Company it did not own (around 30%) and despite opposition from some minority shareholders, which led to a court case, Shell completed the buyout for a sum of $5.7 billion.
Question: On which exchange was Shell Oil Company's U.S. stock historically traded?

Output: the NYSE

Input: Read this: The practice of labelling the infringement of exclusive rights in creative works as "piracy" predates statutory copyright law. Prior to the Statute of Anne in 1710, the Stationers' Company of London in 1557, received a Royal Charter giving the company a monopoly on publication and tasking it with enforcing the charter. Those who violated the charter were labelled pirates as early as 1603. The term "piracy" has been used to refer to the unauthorized copying, distribution and selling of works in copyright. Article 12 of the 1886 Berne Convention for the Protection of Literary and Artistic Works uses the term "piracy" in relation to copyright infringement, stating "Pirated works may be seized on importation into those countries of the Union where the original work enjoys legal protection." Article 61 of the 1994 Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPs) requires criminal procedures and penalties in cases of "willful trademark counterfeiting or copyright piracy on a commercial scale." Piracy traditionally refers to acts of copyright infringement intentionally committed for financial gain, though more recently, copyright holders have described online copyright infringement, particularly in relation to peer-to-peer file sharing networks, as "piracy."
Question: Piracy has been more recently described online in relation to what?

Output: peer-to-peer file sharing networks

Input: Read this: The Sumerians were one of the first known beer drinking societies. Cereals were plentiful and were the key ingredient in their early brew. They brewed multiple kinds of beer consisting of wheat, barley, and mixed grain beers. Beer brewing was very important to the Sumerians. It was referenced in the Epic of Gilgamesh when Enkidu was introduced to the food and beer of Gilgamesh's people: "Drink the beer, as is the custom of the land... He drank the beer-seven jugs! and became expansive and sang with joy!"
Question: What kinds of beer did the Sumerians brew?

Output:
wheat, barley, and mixed grain