Input: Article: In infrared photography, infrared filters are used to capture the near-infrared spectrum. Digital cameras often use infrared blockers. Cheaper digital cameras and camera phones have less effective filters and can "see" intense near-infrared, appearing as a bright purple-white color. This is especially pronounced when taking pictures of subjects near IR-bright areas (such as near a lamp), where the resulting infrared interference can wash out the image. There is also a technique called 'T-ray' imaging, which is imaging using far-infrared or terahertz radiation. Lack of bright sources can make terahertz photography more challenging than most other infrared imaging techniques. Recently T-ray imaging has been of considerable interest due to a number of new developments such as terahertz time-domain spectroscopy.

Now answer this question: What is a notable recent development in T-ray imaging?

Output: terahertz time-domain spectroscopy


Article: In 2005, Argentina's indigenous population (known as pueblos originarios) numbered about 600,329 (1.6% of total population); this figure includes 457,363 people who self-identified as belonging to an indigenous ethnic group and 142,966 who identified themselves as first-generation descendants of an indigenous people. The ten most populous indigenous peoples are the Mapuche (113,680 people), the Kolla (70,505), the Toba (69,452), the Guaraní (68,454), the Wichi (40,036), the Diaguita-Calchaquí (31,753), the Mocoví (15,837), the Huarpe (14,633), the Comechingón (10,863) and the Tehuelche (10,590). Minor but important peoples are the Quechua (6,739), the Charrúa (4,511), the Pilagá (4,465), the Chané (4,376), and the Chorote (2,613). The Selknam (Ona) people are now virtually extinct in its pure form. The languages of the Diaguita, Tehuelche, and Selknam nations have become extinct or virtually extinct: the Cacán language (spoken by Diaguitas) in the 18th century and the Selknam language in the 20th century; one Tehuelche language (Southern Tehuelche) is still spoken by a handful of elderly people.

Question: What was the number of indigenous people in Argentina as of 2005?
Ans: about 600,329


Here is a question about this article: Eisenhower's stint as the president of Columbia University was punctuated by his activity within the Council on Foreign Relations, a study group he led as president concerning the political and military implications of the Marshall Plan, and The American Assembly, Eisenhower's "vision of a great cultural center where business, professional and governmental leaders could meet from time to time to discuss and reach conclusions concerning problems of a social and political nature". His biographer Blanche Wiesen Cook suggested that this period served as "the political education of General Eisenhower", since he had to prioritize wide-ranging educational, administrative, and financial demands for the university. Through his involvement in the Council on Foreign Relations, he also gained exposure to economic analysis, which would become the bedrock of his understanding in economic policy. "Whatever General Eisenhower knows about economics, he has learned at the study group meetings," one Aid to Europe member claimed.
What is the answer to this question: What sort of analysis did Eisenhower first experience with the Council on Foreign Relations?
****
So... economic


The problem: Answer a question about this article:
Wildfires plague the forested areas of Guam every dry season despite the island's humid climate. Most fires are man-caused with 80% resulting from arson. Poachers often start fires to attract deer to the new growth. Invasive grass species that rely on fire as part of their natural life cycle grow in many regularly burned areas. Grasslands and "barrens" have replaced previously forested areas leading to greater soil erosion. During the rainy season sediment is carried by the heavy rains into the Fena Lake Reservoir and Ugum River, leading to water quality problems for southern Guam. Eroded silt also destroys the marine life in reefs around the island. Soil stabilization efforts by volunteers and forestry workers (planting trees) have had little success in preserving natural habitats.
What plagues the Guam dry season?
****
The answer: Wildfires


Problem: Please answer a question about the following article about Indigenous peoples of the Americas:
In recent years, there has been a rise of indigenous movements in the Americas (mainly South America). These are rights-driven groups that organize themselves in order to achieve some sort of self-determination and the preservation of their culture for their peoples. Organizations like the Coordinator of Indigenous Organizations of the Amazon River Basin and the Indian Council of South America are examples of movements that are breaking the barrier of borders in order to obtain rights for Amazonian indigenous populations everywhere. Similar movements for indigenous rights can also be seen in Canada and the United States, with movements like the International Indian Treaty Council and the accession of native Indian group into the Unrepresented Nations and Peoples Organization.
What is an example of a movement which is working to obtain rights for Amazonian populations everywhere?
A: Indian Council of South America


Question: Read this and answer the question

To the pope as to all his predecessors, marital relations are much more than a union of two people. They constitute a union of the loving couple with a loving God, in which the two persons create a new person materially, while God completes the creation by adding the soul. For this reason, Paul VI teaches in the first sentence of Humanae vitae that the transmission of human life is a most serious role in which married people collaborate freely and responsibly with God the Creator. This divine partnership, according to Paul VI, does not allow for arbitrary human decisions, which may limit divine providence. The Pope does not paint an overly romantic picture of marriage: marital relations are a source of great joy, but also of difficulties and hardships. The question of human procreation exceeds in the view of Paul VI specific disciplines such as biology, psychology, demography or sociology. The reason for this, according to Paul VI, is that married love takes its origin from God, who "is love". From this basic dignity, he defines his position:

What does God contribute to a married couple's child?
Answer:
soul