Problem: Copyright infringement:

The U.S. GAO's 2010 findings regarding the great difficulty of accurately gauging the economic impact of copyright infringement was reinforced within the same report by the body's research into three commonly cited estimates that had previously been provided to U.S. agencies. The GAO report explained that the sources a Federal Bureau of Investigation (FBI) estimate, a Customs and Border Protection (CBP) press release and a Motor and Equipment Manufacturers Association estimate "cannot be substantiated or traced back to an underlying data source or methodology."

What did the FBI use as a source?
---
A: estimate

Problem: The Fourteenth Amendment to the United States Constitution (Amendment XIV) is one of the post-Civil War amendments, intended to secure rights for former slaves. It includes the due process and equal protection clauses among others. The amendment introduces the concept of incorporation of all relevant federal rights against the states. While it has not been fully implemented, the doctrine of incorporation has been used to ensure, through the Due Process Clause and Privileges and Immunities Clause, the application of most of the rights enumerated in the Bill of Rights to the states.
What does the 13th Amendment also introduce the concept of?
---
Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Whittaker was unsuited for the role and soon retired. Stewart and Harlan were conservative Republicans, while Brennan was a Democrat who became a leading voice for liberalism. In selecting a Chief Justice, Eisenhower looked for an experienced jurist who could appeal to liberals in the party as well as law-and-order conservatives, noting privately that Warren "represents the kind of political, economic, and social thinking that I believe we need on the Supreme Court ... He has a national name for integrity, uprightness, and courage that, again, I believe we need on the Court". In the next few years Warren led the Court in a series of liberal decisions that revolutionized the role of the Court.
What sort of decisions did Warren favor on the Supreme Court?
A: liberal

Context and question: Cultural practices in the Americas seem to have been shared mostly within geographical zones where unrelated peoples adopted similar technologies and social organizations. An example of such a cultural area is Mesoamerica, where millennia of coexistence and shared development among the peoples of the region produced a fairly homogeneous culture with complex agricultural and social patterns. Another well-known example is the North American plains where until the 19th century several peoples shared the traits of nomadic hunter-gatherers based primarily on buffalo hunting.
How long was there a homogeneous culture on the North American plains?
Answer: until the 19th century

Question: In the 2005 OECD report for Greece, it was clearly stated that "the impact of new accounting rules on the fiscal figures for the years 1997 to 1999 ranged from 0.7 to 1 percentage point of GDP; this retroactive change of methodology was responsible for the revised deficit exceeding 3% in 1999, the year of [Greece's] EMU membership qualification". The above led the Greek minister of finance to clarify that the 1999 budget deficit was below the prescribed 3% limit when calculated with the ESA79 methodology in force at the time of Greece's application, and thus the criteria had been met.
Is there an answer to this question: What was the year of Greece's EMU membership qualification?

Answer: 1999

QUES: On 21 December 1941, the Partisans created the First Proletarian Brigade (commanded by Koca Popovic) and on 1 March 1942, Tito created the Second Proletarian Brigade. In liberated territories, the Partisans organised People's Committees to act as civilian government. The Anti-Fascist Council of National Liberation of Yugoslavia (AVNOJ) convened in Bihac on 2627 November 1942 and in Jajce on 29 November 1943. In the two sessions, the resistance representatives established the basis for post-war organisation of the country, deciding on a federation of the Yugoslav nations. In Jajce, a 67-member "presidency" was elected and established a nine-member National Committee of Liberation (five communist members) as a de facto provisional government. Tito was named President of the National Committee of Liberation.

Where was the 67-member "presidency" located?
What is the answer?
ANS:
Jajce