Problem: In 1957, Braunstein further demonstrated that the rudimentary devices could be used for non-radio communication across a short distance. As noted by Kroemer Braunstein".. had set up a simple optical communications link: Music emerging from a record player was used via suitable electronics to modulate the forward current of a GaAs diode. The emitted light was detected by a PbS diode some distance away. This signal was fed into an audio amplifier, and played back by a loudspeaker. Intercepting the beam stopped the music. We had a great deal of fun playing with this setup." This setup presaged the use of LEDs for optical communication applications.
What year was it discovered that early LED instruments could be used for non-radio communication?
The answer is the following: 1957

The television station, NDtv, grew from one show in 2002 to a full 24-hour channel with original programming by September 2006. WSND-FM serves the student body and larger South Bend community at 88.9 FM, offering students a chance to become involved in bringing classical music, fine arts and educational programming, and alternative rock to the airwaves. Another radio station, WVFI, began as a partner of WSND-FM. More recently, however, WVFI has been airing independently and is streamed on the Internet.
How many programs did NDtv feature in 2002?
one show

Input: Edmund Burke
The historian Piers Brendon asserts that Burke laid the moral foundations for the British Empire, epitomised in the trial of Warren Hastings, that was ultimately to be its undoing: when Burke stated that "The British Empire must be governed on a plan of freedom, for it will be governed by no other", this was "...an ideological bacillus that would prove fatal. This was Edmund Burke's paternalistic doctrine that colonial government was a trust. It was to be so exercised for the benefit of subject people that they would eventually attain their birthrightfreedom". As a consequence of this opinion, Burke objected to the opium trade, which he called a "smuggling adventure" and condemned "the great Disgrace of the British character in India".

What did Burke think had disgraced Britain in India?
Output: opium trade

Input: Article: Many organisms (of which humans are prime examples) eat from multiple levels of the food chain and, thus, make this classification problematic. A carnivore may eat both secondary and tertiary consumers, and its prey may itself be difficult to classify for similar reasons. Organisms showing both carnivory and herbivory are known as omnivores. Even herbivores such as the giant panda may supplement their diet with meat. Scavenging of carrion provides a significant part of the diet of some of the most fearsome predators. Carnivorous plants would be very difficult to fit into this classification, producing their own food but also digesting anything that they may trap. Organisms that eat detritivores or parasites would also be difficult to classify by such a scheme.

Now answer this question: Why would carnivourous plants be difficult to classify into a food pyramid?

Output: producing their own food but also digesting anything that they may trap

Article: To continue evacuating a chamber indefinitely without requiring infinite growth, a compartment of the vacuum can be repeatedly closed off, exhausted, and expanded again. This is the principle behind positive displacement pumps, like the manual water pump for example. Inside the pump, a mechanism expands a small sealed cavity to create a vacuum. Because of the pressure differential, some fluid from the chamber (or the well, in our example) is pushed into the pump's small cavity. The pump's cavity is then sealed from the chamber, opened to the atmosphere, and squeezed back to a minute size.

Question: Why is fluid in a manual pump pushed into the pumps cavity when a small sealed cavity is expanded?
Ans: Because of the pressure differential

Input: The Sun (United Kingdom)
After HMS Sheffield was wrecked by an Argentinian attack, The Sun was heavily criticised and even mocked for its coverage of the war in The Daily Mirror and The Guardian, and the wider media queried the veracity of official information and worried about the number of casualties, The Sun gave its response. "There are traitors in our midst", wrote leader writer Ronald Spark on 7 May, accusing commentators on Daily Mirror and The Guardian, plus the BBC's defence correspondent Peter Snow, of "treason" for aspects of their coverage.

Who was lead writer of The Sun?
Output:
Ronald Spark