Problem: IBM:

The company originated in 1911 as the Computing-Tabulating-Recording Company (CTR) through the consolidation of The Tabulating Machine Company, the International Time Recording Company, the Computing Scale Company and the Bundy Manufacturing Company. CTR was renamed "International Business Machines" in 1924, a name which Thomas J. Watson first used for a CTR Canadian subsidiary. The initialism IBM followed. Securities analysts nicknamed the company Big Blue for its size and common use of the color in products, packaging and its logo.

What was the original name of the Bundy Manufacturing Company?
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A: unanswerable

Problem: Sino-Tibetan relations during the Ming dynasty:

Wylie asserts that this type of censorship of the History of Ming distorts the true picture of the history of Sino-Tibetan relations, while the Ming court granted titles to various lamas regardless of their sectarian affiliations in an ongoing civil war in Tibet between competing Buddhist factions. Wylie argues that Ming titles of "King" granted indiscriminately to various Tibetan lamas or even their disciples should not be viewed as reappointments to earlier Yuan dynasty offices, since the viceregal Sakya regime established by the Mongols in Tibet was overthrown by the Phagmodru myriarchy before the Ming existed.

Who was the viceregal Sakya regime overthrown by?
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A: the Phagmodru myriarchy

Problem: American Idol:

In the first three seasons, the semi-finalists were split into different groups to perform individually in their respective night. In season one, there were three groups of ten, with the top three contestants from each group making the finals. In seasons two and three, there were four groups of eight, and the top two of each selected. These seasons also featured a wildcard round, where contestants who failed to qualify were given another chance. In season one, only one wildcard contestant was chosen by the judges, giving a total of ten finalists. In seasons two and three, each of the three judges championed one contestant with the public advancing a fourth into the finals, making 12 finalists in all.

What is the name of the round that gives failed contestants another chance?
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A: wildcard

Problem: Infection:

A number of studies have reported associations between pathogen load in an area and human behavior. Higher pathogen load is associated with decreased size of ethnic and religious groups in an area. This may be due high pathogen load favoring avoidance of other groups, which may reduce pathogen transmission, or a high pathogen load preventing the creation of large settlements and armies that enforce a common culture. Higher pathogen load is also associated with more restricted sexual behavior, which may reduce pathogen transmission. It also associated with higher preferences for health and attractiveness in mates. Higher fertility rates and shorter or less parental care per child is another association that may be a compensation for the higher mortality rate. There is also an association with polygyny which may be due to higher pathogen load, making selecting males with a high genetic resistance increasingly important. Higher pathogen load is also associated with more collectivism and less individualism, which may limit contacts with outside groups and infections. There are alternative explanations for at least some of the associations although some of these explanations may in turn ultimately be due to pathogen load. Thus, polygny may also be due to a lower male:female ratio in these areas but this may ultimately be due to male infants having increased mortality from infectious diseases. Another example is that poor socioeconomic factors may ultimately in part be due to high pathogen load preventing economic development.

What have a number of studies found no correlation between?
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A:
unanswerable