Problem: Race (human categorization):

Witherspoon et al. (2007) have argued that even when individuals can be reliably assigned to specific population groups, it may still be possible for two randomly chosen individuals from different populations/clusters to be more similar to each other than to a randomly chosen member of their own cluster. They found that many thousands of genetic markers had to be used in order for the answer to the question "How often is a pair of individuals from one population genetically more dissimilar than two individuals chosen from two different populations?" to be "never". This assumed three population groups separated by large geographic ranges (European, African and East Asian). The entire world population is much more complex and studying an increasing number of groups would require an increasing number of markers for the same answer. The authors conclude that "caution should be used when using geographic or genetic ancestry to make inferences about individual phenotypes." Witherspoon, et al. concluded that, "The fact that, given enough genetic data, individuals can be correctly assigned to their populations of origin is compatible with the observation that most human genetic variation is found within populations, not between them. It is also compatible with our ﬁnding that, even when the most distinct populations are considered and hundreds of loci are used, individuals are frequently more similar to members of other populations than to members of their own population."

How many genetic markers need to be used to show people from different groups are dissimilar to each other?
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A: thousands


Problem: In 1954, then-mayor Richard C. Lee began some of the earliest major urban renewal projects in the United States. Certain sections of downtown New Haven were redeveloped to include museums, new office towers, a hotel, and large shopping complexes. Other parts of the city were affected by the construction of Interstate 95 along the Long Wharf section, Interstate 91, and the Oak Street Connector. The Oak Street Connector (Route 34), running between Interstate 95, downtown, and The Hill neighborhood, was originally intended as a highway to the city's western suburbs but was only completed as a highway to the downtown area, with the area to the west becoming a boulevard (See "Redevelopment" below).
What area of New Haven was Route 34 originally intended to service?
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Answer: the city's western suburbs


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Melbourne is an international cultural centre, with cultural endeavours spanning major events and festivals, drama, musicals, comedy, music, art, architecture, literature, film and television. The climate, waterfront location and nightlife make it one of the most vibrant destinations in Australia. For five years in a row (as of 2015) it has held the top position in a survey by The Economist Intelligence Unit of the world's most liveable cities on the basis of a number of attributes which include its broad cultural offerings. The city celebrates a wide variety of annual cultural events and festivals of all types, including Australia's largest free community festival—Moomba, the Melbourne International Arts Festival, Melbourne International Film Festival, Melbourne International Comedy Festival and the Melbourne Fringe Festival. The culture of the city is an important drawcard for tourists, of which just under two million international overnight visitors and 57.7 million domestic overnight visited during the year ending March 2014.
What is Australia's largest free community festival?
A: Moomba


Context and question: Many of the crucial events of the American Revolution—the Boston Massacre, the Boston Tea Party, Paul Revere's midnight ride, the battles of Lexington and Concord and Bunker Hill, the Siege of Boston, and many others—occurred in or near Boston. After the Revolution, Boston's long seafaring tradition helped make it one of the world's wealthiest international ports, with rum, fish, salt, and tobacco being particularly important.
Boston became one of the wealthiest international ports after what war?
Answer: the American Revolution


Question: "By May 1539, Conquistador Hernando de Soto skirted the coast of Florida, searching for a deep harbor to land. He described seeing a thick wall of red mangroves spread mile after mile, some reaching as high as 70 feet (21 m), with intertwined and elevated roots making landing difficult. Very soon, 'many smokes' appeared 'along the whole coast', billowing against the sky, when the Native ancestors of the Seminole spotted the newcomers and spread the alarm by signal fires". The Spanish introduced Christianity, cattle, horses, sheep, the Spanish language, and more to Florida.[full citation needed] Both the Spanish and French established settlements in Florida, with varying degrees of success. In 1559, Don Tristán de Luna y Arellano established a colony at present-day Pensacola, one of the first European settlements in the continental United States, but it was abandoned by 1561.
Is there an answer to this question: What wasn't Hernando de Soto looking for?

Answer: unanswerable


Question: Cladistics is another method of classification. A clade is a taxonomic group of organisms consisting of a single common ancestor and all the descendants of that ancestor. Every creature produced by sexual reproduction has two immediate lineages, one maternal and one paternal. Whereas Carl Linnaeus established a taxonomy of living organisms based on anatomical similarities and differences, cladistics seeks to establish a taxonomy—the phylogenetic tree—based on genetic similarities and differences and tracing the process of acquisition of multiple characteristics by single organisms. Some researchers have tried to clarify the idea of race by equating it to the biological idea of the clade. Often mitochondrial DNA or Y chromosome sequences are used to study ancient human migration paths. These single-locus sources of DNA do not recombine and are inherited from a single parent. Individuals from the various continental groups tend to be more similar to one another than to people from other continents, and tracing either mitochondrial DNA or non-recombinant Y-chromosome DNA explains how people in one place may be largely derived from people in some remote location.
Is there an answer to this question: How many common ancestors does a clade have?

Answer:
single