Problem: LaserDisc:

LaserDisc players can provide a great degree of control over the playback process. Unlike many DVD players, the transport mechanism always obeys commands from the user: pause, fast-forward, and fast-reverse commands are always accepted (barring, of course, malfunctions). There were no "User Prohibited Options" where content protection code instructs the player to refuse commands to skip a specific part (such as fast forwarding through copyright warnings). (Some DVD players, particularly higher-end units, do have the ability to ignore the blocking code and play the video without restrictions, but this feature is not common in the usual consumer market.)

How does LaserDisc operation vary from DVD?
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A: the transport mechanism always obeys commands from the user

Problem: Prompted by legislation in various countries mandating increased bulb efficiency, new "hybrid" incandescent bulbs have been introduced by Philips. The "Halogena Energy Saver" incandescents can produce about 23 lm/W; about 30 percent more efficient than traditional incandescents, by using a reflective capsule to reflect formerly wasted infrared radiation back to the filament from which it can be re-emitted as visible light. This concept was pioneered by Duro-Test in 1980 with a commercial product that produced 29.8 lm/W. More advanced reflectors based on interference filters or photonic crystals can theoretically result in higher efficiency, up to a limit of about 270 lm/W (40% of the maximum efficacy possible). Laboratory proof-of-concept experiments have produced as much as 45 lm/W, approaching the efficacy of compact fluorescent bulbs.
What can produce about 25 Im/W?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In February 2010 Shell and Cosan formed a 50:50 joint-venture, Raizen, comprising all of Cosan's Brazilian ethanol, energy generation, fuel distribution and sugar activities, and all of Shell's Brazilian retail fuel and aviation distribution businesses. In March 2010, Shell announced the sale of some of its assets, including its liquid petroleum gas (LPG) business, to meet the cost of a planned $28bn capital spending programme. Shell invited buyers to submit indicative bids, due by 22 March, with a plan to raise $23bn from the sale. In June 2010, Royal Dutch Shell agreed to acquire all the business of East Resources for a cash consideration of $4.7 billion. The transaction included East Resources' tight gas fields.
Royal Dutch Shell agreed to acquire all the business of what entity in June 2010?
A: East Resources

Context and question: Britain had successful tested a new HAA gun, 3.6-inch, in 1918. In 1928 3.7-inch became the preferred solution, but it took 6 years to gain funding. Production of the QF 3.7-inch (94 mm) began in 1937; this gun was used both on mobile carriages with the field army and transportable guns on fixed mountings for static positions. At the same time the Royal Navy adopted a new 4.5-inch (114 mm) gun in a twin turret, which the army adopted in simplified single-gun mountings for static positions, mostly around ports where naval ammunition was available. However, the performance of both 3.7 and 4.5-in guns was limited by their standard fuse No 199, with a 30-second running time, although a new mechanical time fuse giving 43 seconds was nearing readiness. In 1939 a Machine Fuse Setter was introduced to eliminate manual fuse setting.
What was introduced in 1939?
Answer: Machine Fuse Setter

Question: USB is a serial bus, using four shielded wires for the USB 2.0 variant: two for power (VBUS and GND), and two for differential data signals (labelled as D+ and D in pinouts). Non-Return-to-Zero Inverted (NRZI) encoding scheme is used for transferring data, with a sync field to synchronize the host and receiver clocks. D+ and D signals are transmitted on a twisted pair, providing half-duplex data transfers for USB 2.0. Mini and micro connectors have their GND connections moved from pin #4 to pin #5, while their pin #4 serves as an ID pin for the On-The-Go host/client identification.
Is there an answer to this question: What kind of wires does the USB 2.0 variant use?

Answer: four shielded wires

State schools in Somerset are provided by three local education authorities: Bath and North East Somerset, North Somerset, and the larger Somerset County Council. All state schools are comprehensive. In some areas primary, infant and junior schools cater for ages four to eleven, after which the pupils move on to secondary schools. There is a three-tier system of first, middle and upper schools in the Cheddar Valley, and in West Somerset, while most other schools in the county use the two-tier system. Somerset has 30 state and 17 independent secondary schools; Bath and North East Somerset has 13 state and 5 independent secondary schools; and North Somerset has 10 state and 2 independent secondary schools, excluding sixth form colleges.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many schools are in Cheddar Valley?
Ah, so..
unanswerable