Problem: Light-emitting diode:

The current–voltage characteristic of an LED is similar to other diodes, in that the current is dependent exponentially on the voltage (see Shockley diode equation). This means that a small change in voltage can cause a large change in current. If the applied voltage exceeds the LED's forward voltage drop by a small amount, the current rating may be exceeded by a large amount, potentially damaging or destroying the LED. The typical solution is to use constant-current power supplies to keep the current below the LED's maximum current rating. Since most common power sources (batteries, mains) are constant-voltage sources, most LED fixtures must include a power converter, at least a current-limiting resistor. However, the high resistance of three-volt coin cells combined with the high differential resistance of nitride-based LEDs makes it possible to power such an LED from such a coin cell without an external resistor.

How are LEDs similar to other diodes?
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A: the current is dependent exponentially on the voltage


Problem: A cardinal (Latin: sanctae romanae ecclesiae cardinalis, literally cardinal of the Holy Roman Church) is a senior ecclesiastical leader, an ecclesiastical prince, and usually (now always for those created when still within the voting age-range) an ordained bishop of the Roman Catholic Church. The cardinals of the Church are collectively known as the College of Cardinals. The duties of the cardinals include attending the meetings of the College and making themselves available individually or in groups to the Pope as requested. Most have additional duties, such as leading a diocese or archdiocese or managing a department of the Roman Curia. A cardinal's primary duty is electing the pope when the see becomes vacant. During the sede vacante (the period between a pope's death or resignation and the election of his successor), the day-to-day governance of the Holy See is in the hands of the College of Cardinals. The right to enter the conclave of cardinals where the pope is elected is limited to those who have not reached the age of 80 years by the day the vacancy occurs.
Who is a junior ecclesiastical leader in the Holy Roman Church?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The normal commercial disc is engraved with two sound-bearing concentric spiral grooves, one on each side, running from the outside edge towards the center. The last part of the spiral meets an earlier part to form a circle. The sound is encoded by fine variations in the edges of the groove that cause a stylus (needle) placed in it to vibrate at acoustic frequencies when the disc is rotated at the correct speed. Generally, the outer and inner parts of the groove bear no intended sound (an exception is Split Enz's Mental Notes).
Do all grooves bear data?
A: no


Context and question: Voyager 2 is the only spacecraft that has visited Neptune. The spacecraft's closest approach to the planet occurred on 25 August 1989. Because this was the last major planet the spacecraft could visit, it was decided to make a close flyby of the moon Triton, regardless of the consequences to the trajectory, similarly to what was done for Voyager 1's encounter with Saturn and its moon Titan. The images relayed back to Earth from Voyager 2 became the basis of a 1989 PBS all-night program, Neptune All Night.
 What near Neptune did a spacecraft land on?
Answer: unanswerable


Question: Kathmandu has a larger proportion of tea drinkers than coffee drinkers. Tea is widely served but is extremely weak by western standards. It is richer and contains tea leaves boiled with milk, sugar and spices. Alcohol is widely drunk, and there are numerous local variants of alcoholic beverages. Drinking and driving is illegal, and authorities have a zero tolerance policy. Ailaa and thwon (alcohol made from rice) are the alcoholic beverages of Kathmandu, found in all the local bhattis (alcohol serving eateries). Chhyaang, tongba (fermented millet or barley) and rakshi are alcoholic beverages from other parts of Nepal which are found in Kathmandu. However, shops and bars in Kathmandu widely sell western and Nepali beers.
Is there an answer to this question: How might a western traveler find the tea served in Kathmandu?

Answer: extremely weak


The Ministry of Health is responsible for developing health policy as well as managing the SNS. Five regional health administrations are in charge of implementing the national health policy objectives, developing guidelines and protocols and supervising health care delivery. Decentralization efforts have aimed at shifting financial and management responsibility to the regional level. In practice, however, the autonomy of regional health administrations over budget setting and spending has been limited to primary care.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the Ministry of Health responsible for?
Ah, so..
developing health policy as well as managing the SNS