Problem: Florida:

The United States Census Bureau estimates that the population of Florida was 20,271,272 on July 1, 2015, a 7.82% increase since the 2010 United States Census. The population of Florida in the 2010 census was 18,801,310. Florida was the seventh fastest-growing state in the U.S. in the 12-month period ending July 1, 2012. In 2010, the center of population of Florida was located between Fort Meade and Frostproof. The center of population has moved less than 5 miles (8 km) to the east and approximately 1 mile (1.6 km) to the north between 1980 and 2010 and has been located in Polk County since the 1960 census. The population exceeded 19.7 million by December 2014, surpassing the population of the state of New York for the first time.

How much did the population decrease in 5 years?
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A: unanswerable

Problem: Annelid:

The fluid in the coelomata contains coelomocyte cells that defend the animals against parasites and infections. In some species coelomocytes may also contain a respiratory pigment red hemoglobin in some species, green chlorocruorin in others (dissolved in the plasma) and provide oxygen transport within their segments. Respiratory pigment is also dissolved in the blood plasma. Species with well-developed septa generally also have blood vessels running all long their bodies above and below the gut, the upper one carrying blood forwards while the lower one carries it backwards. Networks of capillaries in the body wall and around the gut transfer blood between the main blood vessels and to parts of the segment that need oxygen and nutrients. Both of the major vessels, especially the upper one, can pump blood by contracting. In some annelids the forward end of the upper blood vessel is enlarged with muscles to form a heart, while in the forward ends of many earthworms some of the vessels that connect the upper and lower main vessels function as hearts. Species with poorly developed or no septa generally have no blood vessels and rely on the circulation within the coelom for delivering nutrients and oxygen.

What runs the length of annelids' brains with well-developed septa?
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A: unanswerable

Problem: 2008 Sichuan earthquake:

By May 15, Premier Wen Jiabao ordered the deployment of an additional 90 helicopters, of which 60 were to be provided by the PLAAF, and 30 were to be provided by the civil aviation industry, bringing the total of number of aircraft deployed in relief operations by the air force, army, and civil aviation to over 150, resulting in the largest non-combat airlifting operation in People's Liberation Army history.

How many helicopters were provided by the PLAAF?
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A: 60

Problem: Emotion:

A distinction can be made between emotional episodes and emotional dispositions. Emotional dispositions are also comparable to character traits, where someone may be said to be generally disposed to experience certain emotions. For example, an irritable person is generally disposed to feel irritation more easily or quickly than others do. Finally, some theorists place emotions within a more general category of "affective states" where affective states can also include emotion-related phenomena such as pleasure and pain, motivational states (for example, hunger or curiosity), moods, dispositions and traits.

What category is defined to contain pleasure, pain, motivation, moods and dispositions?
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A:
affective states