Question: A HDI below 0.5 is considered to represent "low development". All 22 countries in that category are located in Africa. The highest-scoring Sub-Saharan countries, Gabon and South Africa, are ranked 119th and 121st, respectively. Nine countries departed from this category this year and joined the "medium development" group.
Is there an answer to this question: On which continent are all 22 of the low development countries located?

Answer: Africa


Question: The birthplace of IBM, Endicott, suffered pollution for decades, however. IBM used liquid cleaning agents in circuit board assembly operation for more than two decades, and six spills and leaks were recorded, including one leak in 1979 of 4,100 gallons from an underground tank. These left behind volatile organic compounds in the town's soil and aquifer. Traces of volatile organic compounds have been identified in Endicott’s drinking water, but the levels are within regulatory limits. Also, from 1980, IBM has pumped out 78,000 gallons of chemicals, including trichloroethane, freon, benzene and perchloroethene to the air and allegedly caused several cancer cases among the townspeople. IBM Endicott has been identified by the Department of Environmental Conservation as the major source of pollution, though traces of contaminants from a local dry cleaner and other polluters were also found. Remediation and testing are ongoing, however according to city officials, tests show that the water is safe to drink.
Is there an answer to this question: What was a local dry cleaner found to be the main source of in 1979?

Answer: unanswerable


Question: West has additionally appeared and participated in many fundraisers, benefit concerts, and has done community work for Hurricane Katrina relief, the Kanye West Foundation, the Millions More Movement, 100 Black Men of America, a Live Earth concert benefit, World Water Day rally and march, Nike runs, and a MTV special helping young Iraq War veterans who struggle through debt and PTSD a second chance after returning home.
Is there an answer to this question: What are some charitable efforts Kanye west has participated in?

Answer: 100 Black Men of America, a Live Earth concert benefit, World Water Day rally


Question: Two years later, the Emperor Valens, who favored the Arian position, in his turn exiled Athanasius. This time however, Athanasius simply left for the outskirts of Alexandria, where he stayed for only a few months before the local authorities convinced Valens to retract his order of exile. Some early reports state that Athanasius spent this period of exile at his family's ancestral tomb in a Christian cemetery. It was during this period, the final exile, that he is said to have spent four months in hiding in his father's tomb. (Soz., "Hist. Eccl.", VI, xii; Soc., "Hist. Eccl.", IV, xii).
Is there an answer to this question:  Who didn't convince Valens to let him return to Alexandria?

Answer:
unanswerable