Question: The characteristic forms that were to define Gothic architecture grew out of Romanesque architecture and developed at several different geographic locations, as the result of different influences and structural requirements. While barrel vaults and groin vaults are typical of Romanesque architecture, ribbed vaults were used in the naves of two Romanesque churches in Caen, Abbey of Saint-Etienne and Abbaye aux Dames in 1120. Another early example is the nave and apse area of the Cathedral of Cefalu in 1131. The ribbed vault over the north transept at Durham Cathedral in England, built from 1128 to 1133, is probably earlier still and was the first time pointed arches were used in a high vault.
Is there an answer to this question: When was Durham Cathedral abandoned?

Answer: unanswerable

Question: In the traditional domain noted in RFC 1591, .org is for "organizations that didn't fit anywhere else" in the naming system, which implies that it is the proper category for non-commercial organizations if they are not governmental, educational, or one of the other types with a specific TLD. It is not designated specifically for charitable organizations or any specific organizational or tax-law status, however; it encompasses anything that is not classifiable as another category. Currently, no restrictions are enforced on registration of .com or .org, so one can find organizations of all sorts in either of these domains, as well as other top-level domains including newer, more specific ones which may apply to particular sorts of organizations such as .museum for museums or .coop for cooperatives. Organizations might also register by the appropriate country code top-level domain for their country.
Is there an answer to this question: What does tld in a URL mean?

Answer: unanswerable

Question: Detroit has struggled with high crime for decades. Detroit held the title of murder capital between 1985-1987 with a murder rate around 58 per 100,000. Crime has since decreased and, in 2014, the murder rate was 43.4 per 100,000, lower than in St. Louis, Missouri. Although the murder rate increased by 6% during the first half of 2015, it was surpassed by St Louis and Baltimore which saw much greater spikes in violence. At year-end 2015, Detroit had 295 criminal homicides, down slightly from 299 in 2014.
Is there an answer to this question: What was Detroit's murder rate in 2014?

Answer: 43.4 per 100,000

Question: Different fields of science use the term matter in different, and sometimes incompatible, ways. Some of these ways are based on loose historical meanings, from a time when there was no reason to distinguish mass and matter. As such, there is no single universally agreed scientific meaning of the word "matter". Scientifically, the term "mass" is well-defined, but "matter" is not. Sometimes in the field of physics "matter" is simply equated with particles that exhibit rest mass (i.e., that cannot travel at the speed of light), such as quarks and leptons. However, in both physics and chemistry, matter exhibits both wave-like and particle-like properties, the so-called waveparticle duality.
Is there an answer to this question: What is poorly defined besides matter?

Answer:
unanswerable