Input: Read this: The presence of companies like Shell in the Niger-Delta has led to extreme environmental issues in the Niger Delta. Many pipelines in the Niger-Delta owned by Shell are old and corroded. Shell has acknowledged its responsibility for keeping the pipelines new but has also denied responsibility for environmental causes. This has led to mass protests from the Niger-Delta inhabitants and Amnesty International against Shell and Friends of the Earth Netherlands. It has also led to action plans to boycott Shell by environmental groups, and human rights groups. In January 2013, a Dutch court rejected four out of five allegations brought against the firm over oil pollution in the Niger Delta but found a subsidiary guilty of one case of pollution, ordering compensation to be paid to a Nigerian farmer.
Question: What is a cause of severe environmental issues in the Niger Delta?

Output: The presence of companies like Shell

QUES: Eton has a long list of distinguished former pupils. David Cameron is the 19th British prime minister to have attended the school, and has recommended that Eton set up a school in the state sector to help drive up standards. Eton now co-sponsors a state sixth-form college in Newham, a deprived area of East London, called the London Academy of Excellence, opened in 2012, which is free of charge and aims to get all its students into higher education. In September 2014, Eton opened, and became the sole educational sponsor for, a new purpose-built co-educational state boarding and day school for around 500 pupils, Holyport College, in Maidenhead in Berkshire, with construction costing around 15 million, in which a fifth of places for day pupils will be set aside for children from poor homes, 21 boarding places will go to youngsters on the verge of being taken into care, and a further 28 boarders will be funded or part-funded through bursaries.

How much is construction of Holyport College predicted to cost?
What is the answer?
ANS: around 15 million

QUES: Tuberculosis caused the most widespread public concern in the 19th and early 20th centuries as an endemic disease of the urban poor. In 1815, one in four deaths in England was due to "consumption". By 1918, one in six deaths in France was still caused by TB. After TB was determined to be contagious, in the 1880s, it was put on a notifiable disease list in Britain; campaigns were started to stop people from spitting in public places, and the infected poor were "encouraged" to enter sanatoria that resembled prisons (the sanatoria for the middle and upper classes offered excellent care and constant medical attention). Whatever the (purported) benefits of the "fresh air" and labor in the sanatoria, even under the best conditions, 50% of those who entered died within five years (circa 1916).
How many deaths in France were caused by TB in 1815?

ANS: unanswerable

To improve the efficiency of the lamp, the filament usually consists of multiple coils of coiled fine wire, also known as a 'coiled coil'. For a 60-watt 120-volt lamp, the uncoiled length of the tungsten filament is usually 22.8 inches (580 mm), and the filament diameter is 0.0018 inches (0.046 mm). The advantage of the coiled coil is that evaporation of the tungsten filament is at the rate of a tungsten cylinder having a diameter equal to that of the coiled coil. The coiled-coil filament evaporates more slowly than a straight filament of the same surface area and light-emitting power. As a result, the filament can then run hotter, which results in a more efficient light source, while reducing the evaporation so that the filament will last longer than a straight filament at the same temperature.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the advantage of a coiled-coil filament over a straight filament?
Ah, so.. The coiled-coil filament evaporates more slowly

Question: The DIN system, officially DIN standard 4512 by Deutsches Institut fur Normung (but still named Deutscher Normenausschu (DNA) at this time), was published in January 1934. It grew out of drafts for a standardized method of sensitometry put forward by Deutscher Normenausschu fur Phototechnik as proposed by the committee for sensitometry of the Deutsche Gesellschaft fur photographische Forschung since 1930 and presented by Robert Luther (de) (18681945) and Emanuel Goldberg (18811970) at the influential VIII. International Congress of Photography (German: Internationaler Kongre fur wissenschaftliche und angewandte Photographie) held in Dresden from August 3 to 8, 1931.
Try to answer this question if possible: Where was Emanuel Goldberg from?
Answer: unanswerable

QUES: The first successful light bulb filaments were made of carbon (from carbonized paper or bamboo). Early carbon filaments had a negative temperature coefficient of resistance as they got hotter, their electrical resistance decreased. This made the lamp sensitive to fluctuations in the power supply, since a small increase of voltage would cause the filament to heat up, reducing its resistance and causing it to draw even more power and heat even further. In the "flashing" process, carbon filaments were heated by current passing through them while in an evacuated vessel containing hydrocarbon vapor (usually gasoline). The carbon deposited on the filament by this treatment improved the uniformity and strength of filaments as well as their efficiency. A metallized or "graphitized" filament was first heated in a high-temperature oven before flashing and lamp assembly. This transformed the carbon into graphite which further strengthened and smoothed the filament. This also changed the filament to have a positive temperature coefficient, like a metallic conductor, and helped stabilize the lamp's power consumption, temperature and light output against minor variations in supply voltage.
What was not a problem for early carbon filaments?

ANS:
unanswerable