The problem: Answer a question about this article:
IndyMac often made loans without verification of the borrower's income or assets, and to borrowers with poor credit histories. Appraisals obtained by IndyMac on underlying collateral were often questionable as well. As an Alt-A lender, IndyMac's business model was to offer loan products to fit the borrower's needs, using an extensive array of risky option-adjustable-rate-mortgages (option ARMs), subprime loans, 80/20 loans, and other nontraditional products. Ultimately, loans were made to many borrowers who simply could not afford to make their payments. The thrift remained profitable only as long as it was able to sell those loans in the secondary mortgage market. IndyMac resisted efforts to regulate its involvement in those loans or tighten their issuing criteria: see the comment by Ruthann Melbourne, Chief Risk Officer, to the regulating agencies.
What was questionable on IndyMac's underlying collateral?
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The answer: Appraisals

Problem: Please answer a question about the following article about Catalan language:
Nowadays, France only recognizes French as an official language. Nevertheless, on 10 December 2007, the General Council of the Pyrenees-Orientales officially recognized Catalan as one of the languages of the department and seeks to further promote it in public life and education.
Where does the General Council want to promote Catalan?
A: in public life and education

Question: Read this and answer the question

The word Catalan derives from the territory of Catalonia, itself of disputed etymology. The main theory suggests that Catalunya (Latin Gathia Launia) derives from the name Gothia or Gauthia ("Land of the Goths"), since the origins of the Catalan counts, lords and people were found in the March of Gothia, whence Gothland > Gothlandia > Gothalania > Catalonia theoretically derived.

What is the Latin for Calalunya?
Answer: Gathia Launia

Problem: Many groups continued their hunter-gatherer ways of life, although their numbers have continually declined, partly as a result of pressure from growing agricultural and pastoral communities. Many of them reside in the developing world, either in arid regions or tropical forests. Areas that were formerly available to hunter-gatherers wereand continue to beencroached upon by the settlements of agriculturalists. In the resulting competition for land use, hunter-gatherer societies either adopted these practices or moved to other areas. In addition, Jared Diamond has blamed a decline in the availability of wild foods, particularly animal resources. In North and South America, for example, most large mammal species had gone extinct by the end of the Pleistoceneaccording to Diamond, because of overexploitation by humans, although the overkill hypothesis he advocates is strongly contested.[by whom?]
In what type of climate do hunter-gatherers live?
The answer is the following: arid regions or tropical forests

By May 15, Premier Wen Jiabao ordered the deployment of an additional 90 helicopters, of which 60 were to be provided by the PLAAF, and 30 were to be provided by the civil aviation industry, bringing the total of number of aircraft deployed in relief operations by the air force, army, and civil aviation to over 150, resulting in the largest non-combat airlifting operation in People's Liberation Army history.
What kind of operation did this massing of aircraft produce?
non-combat airlifting

Here is a question about this article: In 1906, the tungsten filament was introduced. Tungsten metal was initially not available in a form that allowed it to be drawn into fine wires. Filaments made from sintered tungsten powder were quite fragile. By 1910, a process was developed by William D. Coolidge at General Electric for production of a ductile form of tungsten. The process required pressing tungsten powder into bars, then several steps of sintering, swaging, and then wire drawing. It was found that very pure tungsten formed filaments that sagged in use, and that a very small "doping" treatment with potassium, silicon, and aluminium oxides at the level of a few hundred parts per million greatly improved the life and durability of the tungsten filaments.
What is the answer to this question: What other materials were combined with tungsten?
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So...
potassium, silicon, and aluminium oxides