To prevent further loss of groundwater, Tucson has been involved in water conservation and groundwater preservation efforts, shifting away from its reliance on a series of Tucson area wells in favor of conservation, consumption-based pricing for residential and commercial water use, and new wells in the more sustainable Avra Valley aquifer, northwest of the city. An allocation from the Central Arizona Project Aqueduct (CAP), which passes more than 300 mi (480 km) across the desert from the Colorado River, has been incorporated into the city's water supply, annually providing over 20 million gallons of "recharged" water which is pumped into the ground to replenish water pumped out. Since 2001, CAP water has allowed the city to remove or turn off over 80 wells.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many wells has Tucson stopped using since 2001?
Ah, so.. over 80

By the 1890s the profound effect of adrenal extracts on many different tissue types had been discovered, setting off a search both for the mechanism of chemical signalling and efforts to exploit these observations for the development of new drugs. The blood pressure raising and vasoconstrictive effects of adrenal extracts were of particular interest to surgeons as hemostatic agents and as treatment for shock, and a number of companies developed products based on adrenal extracts containing varying purities of the active substance. In 1897 John Abel of Johns Hopkins University identified the active principle as epinephrine, which he isolated in an impure state as the sulfate salt. Industrial chemist Jokichi Takamine later developed a method for obtaining epinephrine in a pure state, and licensed the technology to Parke Davis. Parke Davis marketed epinephrine under the trade name Adrenalin. Injected epinephrine proved to be especially efficacious for the acute treatment of asthma attacks, and an inhaled version was sold in the United States until 2011 (Primatene Mist). By 1929 epinephrine had been formulated into an inhaler for use in the treatment of nasal congestion.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): In what year was Primatene Mist no longer sold in the United States?
Ah, so.. 2011

Some of Canada's most esteemed colleges and polytechnic institutions also partake in collaborative institute-industry projects, leading to technology commercialization, made possible through the scope of Polytechnics Canada; a national alliance of eleven leading research-intensive colleges and institutes of technology.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is Canada's national alliance of 11 research-focused schools called?
Ah, so..
Polytechnics Canada