Problem: Please answer a question about the following article about Neptune:
At high altitudes, Neptune's atmosphere is 80% hydrogen and 19% helium. A trace amount of methane is also present. Prominent absorption bands of methane exist at wavelengths above 600 nm, in the red and infrared portion of the spectrum. As with Uranus, this absorption of red light by the atmospheric methane is part of what gives Neptune its blue hue, although Neptune's vivid azure differs from Uranus's milder cyan. Because Neptune's atmospheric methane content is similar to that of Uranus, some unknown atmospheric constituent is thought to contribute to Neptune's colour.
Where are absorption bands of methane on Neptune?
A: wavelengths above 600 nm

Question: Read this and answer the question

Since the early history of the United States, Amerindians, AfricanAmericans, and European Americans have been classified as belonging to different races. Efforts to track mixing between groups led to a proliferation of categories, such as mulatto and octoroon. The criteria for membership in these races diverged in the late 19th century. During Reconstruction, increasing numbers of Americans began to consider anyone with "one drop" of known "Black blood" to be Black, regardless of appearance.3 By the early 20th century, this notion was made statutory in many states.4 Amerindians continue to be defined by a certain percentage of "Indian blood" (called blood quantum). To be White one had to have perceived "pure" White ancestry. The one-drop rule or hypodescent rule refers to the convention of defining a person as racially black if he or she has any known African ancestry. This rule meant that those that were mixed race but with some discernible African ancestry were defined as black. The one-drop rule is specific to not only those with African ancestry but to the United States, making it a particularly African-American experience.

Groups of people have been classified as belonging to difference races since what part of the U.S.'s history?
Answer: early

Problem: Marsha Weidner states that Deshin Shekpa's miracles "testified to the power of both the emperor and his guru and served as a legitimizing tool for the emperor's problematic succession to the throne," referring to the Yongle Emperor's conflict with the previous Jianwen Emperor. Tsai writes that Deshin Shekpa aided the legitimacy of the Yongle Emperor's rule by providing him with portents and omens which demonstrated Heaven's favor of the Yongle Emperor on the Ming throne.
What served as a legitimizing tool for the emperor's succession to the throne?
The answer is the following: Deshin Shekpa's miracles

In 2002, Chinese geologist Chen Xuezhong published a Seismic Risk Analysis study in which he came to the conclusion that beginning with 2003, attention should be paid to the possibility of an earthquake with a magnitude of over 7.0 occurring in Sichuan region. He based his study on statistical correlation. That Sichuan is a seismically active area has been discussed for years prior to the quake, though few studies point to a specific date and time.
Who published the Seismic Risk Analysis?
Chen Xuezhong

Input: Qing dynasty
The most significant fact of early and mid-Qing social history was population growth. The population doubled during the 18th century. People in this period were also remarkably on the move. There is evidence suggesting that the empire's rapidly expanding population was geographically mobile on a scale, which, in term of its volume and its protracted and routinized nature, was unprecedented in Chinese history. Indeed, the Qing government did far more to encourage mobility than to discourage it. Migration took several different forms, though might be divided in two varieties: permanent migration for resettlement, and relocation conceived by the party (in theory at least) as a temporary sojourn. Parties to the latter would include the empire's increasingly large and mobile manual workforce, as well as its densely overlapping internal diaspora of local-origin-based merchant groups. It would also included the patterned movement of Qing subjects overseas, largely to Southeastern Asia, in search of trade and other economic opportunities.

How much did the population grow during the 18th century?
Output: doubled

Problem: Please answer a question about the following article about Planck constant:
The theoretical difficulties arise from the fact that all of the methods except the X-ray crystal density method rely on the theoretical basis of the Josephson effect and the quantum Hall effect. If these theories are slightly inaccurate though there is no evidence at present to suggest they are the methods would not give accurate values for the Planck constant. More importantly, the values of the Planck constant obtained in this way cannot be used as tests of the theories without falling into a circular argument. Fortunately, there are other statistical ways of testing the theories, and the theories have yet to be refuted.
Using Planck constant values from these effects would lead to what logical issue?
A:
a circular argument