Problem: Wood:

Certain types of musical instruments, such as those of the violin family, the guitar, the clarinet and recorder, the xylophone, and the marimba, are traditionally made mostly or entirely of wood. The choice of wood may make a significant difference to the tone and resonant qualities of the instrument, and tonewoods have widely differing properties, ranging from the hard and dense african blackwood (used for the bodies of clarinets) to the light but resonant European spruce (Picea abies), which is traditionally used for the soundboards of violins. The most valuable tonewoods, such as the ripple sycamore (Acer pseudoplatanus), used for the backs of violins, combine acoustic properties with decorative color and grain which enhance the appearance of the finished instrument.

What kind of wood are clarinet bodies made from?
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A: african blackwood

Problem: From earliest days, Virginia, and Richmond in particular, have welcomed live theatrical performances. From Lewis Hallam's early productions of Shakespeare in Williamsburg, the focus shifted to Richmond's antebellum prominence as a main colonial and early 19th century performance venue for such celebrated American and English actors as William Macready, Edwin Forrest, and the Booth family. In the 20th century, Richmonders' love of theater continued with many amateur troupes and regular touring professional productions. In the 1960s a small renaissance or golden age accompanied the growth of professional dinner theaters and the fostering of theater by the Virginia Museum, reaching a peak in the 1970s with the establishment of a resident Equity company at the Virginia Museum Theater (now the Leslie Cheek) and the birth of Theatre IV, a company that continues to this day.
In what city did Lewis Hallam present Shakespeare's plays?
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Answer: Williamsburg

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In Charleston, the African American population increased as freedmen moved from rural areas to the major city: from 17,000 in 1860 to over 27,000 in 1880. Historian Eric Foner noted that blacks were glad to be relieved of the many regulations of slavery and to operate outside of white surveillance. Among other changes, most blacks quickly left the Southern Baptist Church, setting up their own black Baptist congregations or joining new African Methodist Episcopal Church and AME Zion churches, both independent black denominations first established in the North. Freedmen "acquired dogs, guns, and liquor (all barred to them under slavery), and refused to yield the sidewalks to whites".
How many African Americans lived in Charleston in 1860?
A: 17,000

Context and question: The American bison is a large bovid which inhabited much of western North America prior to the 1800s, living on the prairies in large herds. However, the vast herds of bison attracted market hunters, who killed dozens of bison for their hides only, leaving the rest to rot. Thousands of these hunters quickly eliminated the bison herds, bringing the population from several million in the early 1800s to a few hundred by the 1880s. Conservation efforts have allowed the population to increase, but the bison remains near-threatened.
What area did market hunters come from in the 1880's?
Answer: unanswerable

Question: Along with the general administration of the sport, football associations and competition organisers also enforce good conduct in wider aspects of the game, dealing with issues such as comments to the press, clubs' financial management, doping, age fraud and match fixing. Most competitions enforce mandatory suspensions for players who are sent off in a game. Some on-field incidents, if considered very serious (such as allegations of racial abuse), may result in competitions deciding to impose heavier sanctions than those normally associated with a red card. Some associations allow for appeals against player suspensions incurred on-field if clubs feel a referee was incorrect or unduly harsh.
Is there an answer to this question: What do players who are sent off in a game never faced with?

Answer: unanswerable

QUES: According to the 2014 United States Census estimates, there were 1,560,297 people residing in the City of Philadelphia, representing a 2.2% increase since 2010. From the 1960s up until 2006, the city's population declined year after year. It eventually reached a low of 1,488,710 residents in 2006 before beginning to rise again. Since 2006, Philadelphia added 71,587 residents in eight years. A study done by the city projected that the population would increase to about 1,630,000 residents by 2035, an increase of about 100,000 from 2010.

When was the low point in Philadelphia's population?
What is the answer?
ANS:
2006