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Four states in the modern era, Nebraska in 2008, New York and Kansas in 2004, and Massachusetts in 1984, had their statutes ruled unconstitutional by state courts. The death rows of New York and Massachusetts were disestablished, and attempts to restore the death penalty were unsuccessful. Kansas successfully appealed State v. Kleypas, the Kansas Supreme Court decision that declared the state's death penalty statute unconstitutional, to the United States Supreme Court. Nebraska's death penalty statute was rendered ineffective on February 8, 2008 when the required method, electrocution, was ruled unconstitutional by the Nebraska Supreme Court. In 2009, Nebraska enacted a bill that changed its method of execution to lethal injection.
In what case did the Kansas Supreme Court rule that the death penalty is unconstitutional in Kansas?
A: State v. Kleypas

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Mianyang Hi-Tech Industrial Development Zone was established in 1992, with a planned area of 43 km2 (17 sq mi). The zone is situated 96 kilometers away from Chengdu, and is 8 km (5.0 mi) away from Mianyang Airport. Since its establishment, the zone accumulated 177.4 billion yuan of industrial output, 46.2 billion yuan of gross domestic product, fiscal revenue 6.768 billion yuan. There are more than 136 high-tech enterprises in the zone and they accounted for more than 90% of the total industrial output.
What is the planned area of the Mianyang Hi-Tech Industrial Development Zone?
A: 17 sq mi

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A German ethnicity emerged in the course of the Middle Ages, ultimately as a result of the formation of the kingdom of Germany within East Francia and later the Holy Roman Empire, beginning in the 9th century. The process was gradual and lacked any clear definition, and the use of exonyms designating "the Germans" develops only during the High Middle Ages. The title of rex teutonicum "King of the Germans" is first used in the late 11th century, by the chancery of Pope Gregory VII, to describe the future Holy Roman Emperor of the German Nation Henry IV. Natively, the term ein diutscher ("a German") is used for the people of Germany from the 12th century.
When did a German ethnicity emerge?
A: the Middle Ages

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Rapid environmental changes typically cause mass extinctions. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 1037, and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as 4 TtC (trillion tons of carbon).
How many DNA base pairs have ever existed?
A:
unanswerable