Input: Article: A P-N junction can convert absorbed light energy into a proportional electric current. The same process is reversed here (i.e. the P-N junction emits light when electrical energy is applied to it). This phenomenon is generally called electroluminescence, which can be defined as the emission of light from a semi-conductor under the influence of an electric field. The charge carriers recombine in a forward-biased P-N junction as the electrons cross from the N-region and recombine with the holes existing in the P-region. Free electrons are in the conduction band of energy levels, while holes are in the valence energy band. Thus the energy level of the holes will be lesser than the energy levels of the electrons. Some portion of the energy must be dissipated in order to recombine the electrons and the holes. This energy is emitted in the form of heat and light.

Now answer this question: What is the phenomenon where a P-N junction emits light when an electrical current is applied to it?

Output: electroluminescence


Article: There are three classes of components for oxide glasses: network formers, intermediates, and modifiers. The network formers (silicon, boron, germanium) form a highly cross-linked network of chemical bonds. The intermediates (titanium, aluminium, zirconium, beryllium, magnesium, zinc) can act as both network formers and modifiers, according to the glass composition. The modifiers (calcium, lead, lithium, sodium, potassium) alter the network structure; they are usually present as ions, compensated by nearby non-bridging oxygen atoms, bound by one covalent bond to the glass network and holding one negative charge to compensate for the positive ion nearby. Some elements can play multiple roles; e.g. lead can act both as a network former (Pb4+ replacing Si4+), or as a modifier.

Question: What components of glass for networks?
Ans: silicon, boron, germanium


Here is a question about this article: Some consider storyboards and wordless novels to be comics. Film studios, especially in animation, often use sequences of images as guides for film sequences. These storyboards are not intended as an end product and are rarely seen by the public. Wordless novels are books which use sequences of captionless images to deliver a narrative.
What is the answer to this question: Storyboards and what are thought to be comics by some?
****
So... Wordless novels


The problem: Answer a question about this article:
Stadium attendances are a significant source of regular income for Premier League clubs. For the 2009–10 season, average attendances across the league clubs were 34,215 for Premier League matches with a total aggregate attendance figure of 13,001,616. This represents an increase of 13,089 from the average attendance of 21,126 recorded in the league's first season (1992–93). However, during the 1992–93 season the capacities of most stadiums were reduced as clubs replaced terraces with seats in order to meet the Taylor Report's 1994–95 deadline for all-seater stadiums. The Premier League's record average attendance of 36,144 was set during the 2007–08 season. This record was then beaten in the 2013–14 season recording an average attendance of 36,695 with a total attendance of just under 14 million, the highest average in England's top flight since 1950.
What was the total attendance of all Premier League games during the 2009-10 season?
****
The answer: 13,001,616


Problem: Please answer a question about the following article about Post-punk:
In the early 1980s, Downtown Manhattan's no wave scene transitioned from its abrasive origins into a more dance-oriented sound, with compilations such as ZE's Mutant Disco (1981) highlighting a newly playful sensibility borne out of the city's clash of hip hop, disco and punk styles, as well as dub reggae and world music influences. Artists such as Liquid Liquid, the B-52s, Cristina, Arthur Russell, James White and the Blacks and Lizzy Mercier Descloux pursued a formula described by Luc Sante as "anything at all + disco bottom". The decadent parties and art installations of venues such as Club 57 and the Mudd Club became cultural hubs for musicians and visual artists alike, with figures such as Jean-Michel Basquiat, Keith Haring and Michael Holman frequenting the scene. Other no wave-indebted groups such as Swans, Glenn Branca, the Lounge Lizards, Bush Tetras and Sonic Youth instead continued exploring the early scene's forays into noise and more abrasive territory.
What formula did a lot of the artists emerging from the scene adhere to?
A: "anything at all + disco bottom"


Question: Read this and answer the question

Numerous indigenous peoples occupied Alaska for thousands of years before the arrival of European peoples to the area. Linguistic and DNA studies done here have provided evidence for the settlement of North America by way of the Bering land bridge.[citation needed] The Tlingit people developed a society with a matrilineal kinship system of property inheritance and descent in what is today Southeast Alaska, along with parts of British Columbia and the Yukon. Also in Southeast were the Haida, now well known for their unique arts. The Tsimshian people came to Alaska from British Columbia in 1887, when President Grover Cleveland, and later the U.S. Congress, granted them permission to settle on Annette Island and found the town of Metlakatla. All three of these peoples, as well as other indigenous peoples of the Pacific Northwest Coast, experienced smallpox outbreaks from the late 18th through the mid-19th century, with the most devastating epidemics occurring in the 1830s and 1860s, resulting in high fatalities and social disruption.

In what year did the Tsimshian people arrive in Alaska?
Answer:
1887