Problem: Incandescent light bulb:

Most light bulbs have either clear or coated glass. The coated glass bulbs have a white powdery substance on the inside called kaolin. Kaolin, or kaolinite, is a white, chalky clay in a very fine powder form, that is blown in and electrostatically deposited on the interior of the bulb. It diffuses the light emitted from the filament, producing a more gentle and evenly distributed light. Manufacturers may add pigments to the kaolin to adjust the characteristics of the final light emitted from the bulb. Kaolin diffused bulbs are used extensively in interior lighting because of their comparatively gentle light. Other kinds of colored bulbs are also made, including the various colors used for "party bulbs", Christmas tree lights and other decorative lighting. These are created by coloring the glass with a dopant; which is often a metal like cobalt (blue) or chromium (green). Neodymium-containing glass is sometimes used to provide a more natural-appearing light.

How does kaolin create a more gentle light?
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A: It diffuses the light emitted from the filament


Problem: It has been argued that high rates of education are essential for countries to be able to achieve high levels of economic growth. Empirical analyses tend to support the theoretical prediction that poor countries should grow faster than rich countries because they can adopt cutting edge technologies already tried and tested by rich countries. However, technology transfer requires knowledgeable managers and engineers who are able to operate new machines or production practices borrowed from the leader in order to close the gap through imitation. Therefore, a country's ability to learn from the leader is a function of its stock of "human capital". Recent study of the determinants of aggregate economic growth have stressed the importance of fundamental economic institutions and the role of cognitive skills.
What is the theory not behind Empirical analyses?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
There are few accredited diplomats in Bermuda. The United States maintains the largest diplomatic mission in Bermuda, comprising both the United States Consulate and the US Customs and Border Protection Services at the L.F. Wade International Airport. The current US Consul General is Robert Settje, who took office in August 2012. The United States is Bermuda's largest trading partner (providing over 71% of total imports, 85% of tourist visitors, and an estimated $163 billion of US capital in the Bermuda insurance/re-insurance industry), and an estimated 5% of Bermuda residents are US citizens, representing 14% of all foreign-born persons. The American diplomatic presence is an important element in the Bermuda political landscape.
Why is the US so important to Bermuda?
A: The United States is Bermuda's largest trading partner


Context and question: Since the start of the 1994–95 season, the FA Cup has been sponsored. However, to protect the identity of the competition, the sponsored name has always included 'The FA Cup' in addition to the sponsor's name, unlike sponsorship deals for the League Cup where the word 'cup' is preceded by only the sponsor's name. Sponsorship deals run for four years, though – as in the case of E.ON – one-year extensions may be agreed. Emirates airline is the sponsor from 2015 to 2018, renaming the competition as 'The Emirates FA Cup', unlike previous editions, which included 'The FA Cup in association with E.ON' and 'The FA Cup with Budweiser'.
What is not the sponsor from 2015 to 2018?
Answer: unanswerable


Question: 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.
Is there an answer to this question: How many aircraft were there in total?

Answer: over 150


Question: On leaving the University of Oxford, in 1676, Edmond Halley visited Saint Helena and set up an astronomical observatory with a 7.3-metre-long (24 ft) aerial telescope with the intention of studying stars from the Southern Hemisphere. The site of this telescope is near Saint Mathew's Church in Hutt's Gate, in the Longwood district. The 680-metre (2,230 ft) high hill there is named for him and is called Halley's Mount.
Is there an answer to this question: What hemisphere of stars did Edmond Halley want to study with the telescope?

Answer:
Southern