Problem: Bird:

Birds have one of the most complex respiratory systems of all animal groups. Upon inhalation, 75% of the fresh air bypasses the lungs and flows directly into a posterior air sac which extends from the lungs and connects with air spaces in the bones and fills them with air. The other 25% of the air goes directly into the lungs. When the bird exhales, the used air flows out of the lung and the stored fresh air from the posterior air sac is simultaneously forced into the lungs. Thus, a bird's lungs receive a constant supply of fresh air during both inhalation and exhalation. Sound production is achieved using the syrinx, a muscular chamber incorporating multiple tympanic membranes which diverges from the lower end of the trachea; the trachea being elongated in some species, increasing the volume of vocalizations and the perception of the bird's size.

What is the syrinx?
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A: a muscular chamber incorporating multiple tympanic membranes

Problem: The Premier League is broadcast in the United States through NBC Sports. Premier League viewership has increased rapidly, with NBC and NBCSN averaging a record 479,000 viewers in the 201415 season, up 118% from 201213 when coverage still aired on Fox Soccer and ESPN/ESPN2 (220,000 viewers), and NBC Sports has been widely praised for its coverage. NBC Sports reached a six-year extension with the Premier League in 2015 to broadcast the league through the 202122 season in a deal valued at $1 billion (640 million).
How many viewers on average watched the Premier League 2014-15 season in the US?
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Answer: 479,000

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The concept of nobility flourished in New Spain in a way not seen in other parts of the Americas. Spaniards encountered a society in which the concept of nobility mirrored that of their own. Spaniards respected the indigenous order of nobility and added to it. In the ensuing centuries, possession of a noble title in Mexico did not mean one exercised great political power, for one's power was limited even if the accumulation of wealth was not. The concept of nobility in Mexico was not political but rather a very conservative Spanish social one, based on proving the worthiness of the family. Most of these families proved their worth by making fortunes in New Spain outside of the city itself, then spending the revenues in the capital, building churches, supporting charities and building extravagant palatial homes. The craze to build the most opulent residence possible reached its height in the last half of the 18th century. Many of these palaces can still be seen today, leading to Mexico City's nickname of "The city of palaces" given by Alexander Von Humboldt.
What is a common nickname for Mexico City?
A: The city of palaces

Context and question: Coordinative definition has two major features. The first has to do with coordinating units of length with certain physical objects. This is motivated by the fact that we can never directly apprehend length. Instead we must choose some physical object, say the Standard Metre at the Bureau International des Poids et Mesures (International Bureau of Weights and Measures), or the wavelength of cadmium to stand in as our unit of length. The second feature deals with separated objects. Although we can, presumably, directly test the equality of length of two measuring rods when they are next to one another, we can not find out as much for two rods distant from one another. Even supposing that two rods, whenever brought near to one another are seen to be equal in length, we are not justified in stating that they are always equal in length. This impossibility undermines our ability to decide the equality of length of two distant objects. Sameness of length, to the contrary, must be set by definition.
How must diffrence of l;ength be set?
Answer: unanswerable

Question: The University of Kansas is a large, state-sponsored university, with five campuses. KU features the College of Liberal Arts & Sciences, which includes the School of the Arts and the School of Public Affairs & Administration; and the schools of Architecture, Design & Planning; Business; Education; Engineering; Health Professions; Journalism & Mass Communications; Law; Medicine; Music; Nursing; Pharmacy; and Social Welfare. The university offers more than 345 degree programs.
Is there an answer to this question: What are three parts of the University of Kansas house in the College of Liberal Arts and Sciences?

Answer: unanswerable

The hole walls for boards with two or more layers can be made conductive and then electroplated with copper to form plated-through holes. These holes electrically connect the conducting layers of the PCB. For multi-layer boards, those with three layers or more, drilling typically produces a smear of the high temperature decomposition products of bonding agent in the laminate system. Before the holes can be plated through, this smear must be removed by a chemical de-smear process, or by plasma-etch. The de-smear process ensures that a good connection is made to the copper layers when the hole is plated through. On high reliability boards a process called etch-back is performed chemically with a potassium permanganate based etchant or plasma. The etch-back removes resin and the glass fibers so that the copper layers extend into the hole and as the hole is plated become integral with the deposited copper.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Smears are removed with a chemical smear what?
Ah, so..
unanswerable