The problem: Answer a question about this article:
The structure of QD-LEDs used for the electrical-excitation scheme is similar to basic design of OLEDs. A layer of quantum dots is sandwiched between layers of electron-transporting and hole-transporting materials. An applied electric field causes electrons and holes to move into the quantum dot layer and recombine forming an exciton that excites a QD. This scheme is commonly studied for quantum dot display. The tunability of emission wavelengths and narrow bandwidth is also beneficial as excitation sources for fluorescence imaging. Fluorescence near-field scanning optical microscopy (NSOM) utilizing an integrated QD-LED has been demonstrated.
During the electrical-excitation scheme, what moves into the quantum dot layer?
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The answer: electrons and holes


Problem: Please answer a question about the following article about Pacific War:
Kurita's "Center Force" consisted of five battleships, 12 cruisers and 13 destroyers. It included the two largest battleships ever built: Yamato and Musashi. As they passed Palawan Island after midnight on 23 October the force was spotted, and U.S. submarines sank two cruisers. On 24 October, as Kurita's force entered the Sibuyan Sea, USS Intrepid and USS Cabot launched 260 planes, which scored hits on several ships. A second wave of planes scored many direct hits on Musashi. A third wave, from USS Enterprise and USS Franklin hit Musashi with 11 bombs and eight torpedoes. Kurita retreated but in the evening turned around to head for San Bernardino Strait. Musashi sank at about 19:30.
How many destroyers were in Kurita's "Center Force"?
A: 13


Question: Read this and answer the question

In December 1994, after being tipped off by his former FBI handler about a pending indictment under the Racketeer Influenced and Corrupt Organizations Act, Bulger fled Boston and went into hiding. For 16 years, he remained at large. For 12 of those years, Bulger was prominently listed on the FBI Ten Most Wanted Fugitives list. Beginning in 1997, the New England media exposed criminal actions by federal, state, and local law enforcement officials tied to Bulger. The revelation caused great embarrassment to the FBI. In 2002, Special Agent John J Connolly was convicted of federal racketeering charges for helping Bulger avoid arrest. In 2008, Special Agent Connolly completed his term on the federal charges and was transferred to Florida where he was convicted of helping plan the murder of John B Callahan, a Bulger rival. In 2014, that conviction was overturned on a technicality. Connolly was the agent leading the investigation of Bulger.

How long did Bulger remain at large?
Answer: 16


Problem: A Turco-Mongol conqueror in Central Asia, Timur (Tamerlane), attacked the reigning Sultan Nasir-u Din Mehmud of the Tughlaq Dynasty in the north Indian city of Delhi. The Sultan's army was defeated on 17 December 1398. Timur entered Delhi and the city was sacked, destroyed, and left in ruins, after Timur's army had killed and plundered for three days and nights. He ordered the whole city to be sacked except for the sayyids, scholars, and the "other Muslims" (artists); 100,000 war prisoners were put to death in one day. The Sultanate suffered significantly from the sacking of Delhi revived briefly under the Lodi Dynasty, but it was a shadow of the former.
How many prisoners of war were executed in the sack of Delhi?
The answer is the following: 100,000


In literature and journalism, BYU has produced several best-selling authors, including Orson Scott Card '75, Brandon Sanderson '00 & '05, Ben English '98, and Stephenie Meyer '95. BYU also graduated American activist and contributor for ABC News Elizabeth Smart-Gilmour. Other media personalities include former CBS News correspondent Art Rascon, award-winning ESPN sportscaster and former Miss America Sharlene Wells Hawkes '86 and former co-host of CBS's The Early Show Jane Clayson Johnson '90. In entertainment and television, BYU is represented by Jon Heder '02 (best known for his role as Napoleon Dynamite), writer-director Daryn Tufts '98, Golden Globe-nominated Aaron Eckhart '94, animator and filmmaker Don Bluth '54, Jeopardy! all-time champion Ken Jennings '00, and Richard Dutcher, the "Father of Mormon Cinema." In the music industry BYU is represented by lead singer of the Grammy Award winning band Imagine Dragons Dan Reynolds, multi-platinum selling drummer Elaine Bradley from the band Neon Trees, crossover dubstep violinist Lindsey Stirling, former American Idol contestant Carmen Rasmusen, Mormon Tabernacle Choir director Mack Wilberg and pianist Massimiliano Frani.
Which former co-host of CBS's The Early Show graduated from BYU?
Jane Clayson Johnson


Here is a question about this article: Western Catalan comprises the two dialects of Northwestern Catalan and Valencian; the Eastern block comprises four dialects: Central Catalan, Balearic, Rossellonese, and Alguerese. Each dialect can be further subdivided in several subdialects.
What is the answer to this question: How many dialects are in the eastern group?
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So...
four