Problem: Group (mathematics):

Two groups G and H are called isomorphic if there exist group homomorphisms a: G → H and b: H → G, such that applying the two functions one after another in each of the two possible orders gives the identity functions of G and H. That is, a(b(h)) = h and b(a(g)) = g for any g in G and h in H. From an abstract point of view, isomorphic groups carry the same information. For example, proving that g • g = 1G for some element g of G is equivalent to proving that a(g) ∗ a(g) = 1H, because applying a to the first equality yields the second, and applying b to the second gives back the first.

From what point of view do isomorphic groups have different information?
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A: unanswerable


Problem: The ISO standard ISO 12232:2006 gives digital still camera manufacturers a choice of five different techniques for determining the exposure index rating at each sensitivity setting provided by a particular camera model. Three of the techniques in ISO 12232:2006 are carried over from the 1998 version of the standard, while two new techniques allowing for measurement of JPEG output files are introduced from CIPA DC-004. Depending on the technique selected, the exposure index rating can depend on the sensor sensitivity, the sensor noise, and the appearance of the resulting image. The standard specifies the measurement of light sensitivity of the entire digital camera system and not of individual components such as digital sensors, although Kodak has reported using a variation to characterize the sensitivity of two of their sensors in 2001.
How many techniques depend on sensor sensitivity?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
According to Sun Jiadong, the chief designer of the navigation system, "Many organizations have been using our system for a while, and they like it very much."
Moon Jiadong says that many organizations have been doing what?
A: unanswerable


Context and question: A gymnast's score comes from deductions taken from their start value. The start value of a routine is based on the difficulty of the elements the gymnast attempts and whether or not the gymnast meets composition requirements. The composition requirements are different for each apparatus; this score is called the D score. Deductions in execution and artistry are taken from 10.0. This score is called the E score. The final score is calculated by taking deductions from the E score, and adding the result to the D score. Since 2007, the scoring system has changed by adding bonus plus the execution and then adding those two together to get the final score.
What deductions are taken from the E score?
Answer: unanswerable


Question: At the 2009 American Community Survey, Black Americans made the second largest group in the Bronx after Hispanics and Latinos. Blacks of both Hispanic and non-Hispanic origin represented over one-third (35.4%) of the Bronx's population. Blacks of non-Hispanic origin made up 30.8% of the population. Over 495,200 blacks resided in the borough, of which 430,600 were non-Hispanic blacks. Over 61,000 people identified themselves as "Sub-Saharan African" in the survey, making up 4.4% of the population.
Is there an answer to this question: How much of the Bronx's population is black (including Hispanic)?

Answer: 35.4%


Question: Summers in the state are generally hot and humid, with most of the state averaging a high of around 90 °F (32 °C) during the summer months. Winters tend to be mild to cool, increasing in coolness at higher elevations. Generally, for areas outside the highest mountains, the average overnight lows are near freezing for most of the state. The highest recorded temperature is 113 °F (45 °C) at Perryville on August 9, 1930 while the lowest recorded temperature is −32 °F (−36 °C) at Mountain City on December 30, 1917.
Is there an answer to this question: Where was the highest known temperature in Tennessee recorded?

Answer:
Perryville