Problem: Frederic Chopin:

From 1842 onwards, Chopin showed signs of serious illness. After a solo recital in Paris on 21 February 1842, he wrote to Grzymaa: "I have to lie in bed all day long, my mouth and tonsils are aching so much." He was forced by illness to decline a written invitation from Alkan to participate in a repeat performance of the Beethoven Seventh Symphony arrangement at Erard's on 1 March 1843. Late in 1844, Charles Halle visited Chopin and found him "hardly able to move, bent like a half-opened penknife and evidently in great pain", although his spirits returned when he started to play the piano for his visitor. Chopin's health continued to deteriorate, particularly from this time onwards. Modern research suggests that apart from any other illnesses, he may also have suffered from temporal lobe epilepsy.

What performance was Chopin forced to decline due to his increasing ill health?
---
A: Beethoven Seventh Symphony arrangement at Erard's

Problem: In other cases, such as New Zealand and Canada, treaties allowed native peoples to maintain a minimum amount of autonomy. In the case of indigenous Australians, unlike with the Maori of New Zealand, no treaty was ever entered into with the indigenous peoples entitling the Europeans to land ownership, under the doctrine of terra nullius (later overturned by Mabo v Queensland, establishing the concept of native title well after colonization was already a fait accompli). Such treaties between colonizers and indigenous peoples are an important part of political discourse in the late 20th and early 21st century, the treaties being discussed have international standing as has been stated in a treaty study by the UN.
Treaties between indigenous peoples and what other groups formed an important part of political discourse in the late 20th and early 21st century?
---
Answer: colonizers

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Other important Venetian mosaics can be found in the Cathedral of Santa Maria Assunta in Torcello from the 12th century, and in the Basilical of Santi Maria e Donato in Murano with a restored apse mosaic from the 12th century and a beautiful mosaic pavement (1140). The apse of the San Cipriano Church in Murano was decorated with an impressive golden mosaic from the early 13th century showing Christ enthroned with Mary, St John and the two patron saints, Cipriano and Cipriana. When the church was demolished in the 19th century, the mosaic was bought by Frederick William IV of Prussia. It was reassembled in the Friedenskirche of Potsdam in the 1840s.
Where did Frederick William IV relocate the mural he purchased?
A: the Friedenskirche of Potsdam

Context and question: Federal law and treaties, so long as they are in accordance with the Constitution, preempt conflicting state and territorial laws in the 50 U.S. states and in the territories. However, the scope of federal preemption is limited because the scope of federal power is not universal. In the dual-sovereign system of American federalism (actually tripartite because of the presence of Indian reservations), states are the plenary sovereigns, each with their own constitution, while the federal sovereign possesses only the limited supreme authority enumerated in the Constitution. Indeed, states may grant their citizens broader rights than the federal Constitution as long as they do not infringe on any federal constitutional rights. Thus, most U.S. law (especially the actual "living law" of contract, tort, property, criminal, and family law experienced by the majority of citizens on a day-to-day basis) consists primarily of state law, which can and does vary greatly from one state to the next.
States can grant their people broader rights than those granted in what document?
Answer: the federal Constitution

Question: Sport forms an integral part of German life, as demonstrated by the fact that 27 million Germans are members of a sports club and an additional twelve million pursue such an activity individually. Football is by far the most popular sport, and the German Football Federation (Deutscher Fuballbund) with more than 6.3 million members is the largest athletic organisation in the country. It also attracts the greatest audience, with hundreds of thousands of spectators attending Bundesliga matches and millions more watching on television.
Is there an answer to this question: What has thousands of television spectators?

Answer: unanswerable

Problem: FC Barcelona:

After the disappointment of the Gaspart era, the combination of a new young president, Joan Laporta, and a young new manager, former Dutch and Milan star Frank Rijkaard, saw the club bounce back. On the field, an influx of international players, including Ronaldinho, Deco, Henrik Larsson, Ludovic Giuly, Samuel Eto'o, and Rafael Marquez, combined with home grown Spanish players, such as Carles Puyol, Andres Iniesta, Xavi and Victor Valdes, led to the club's return to success. Barcelona won La Liga and the Supercopa de Espana in 200405, and Ronaldinho and Eto'o were voted first and third, respectively, in the FIFA World Player of the Year awards.

At this time, what type of players were added to Barcelona?
---
A:
international