Problem: Please answer a question about the following article about Korean War:
With Lieutenant-General Matthew Ridgway assuming the command of the U.S. Eighth Army on 26 December, the PVA and the KPA launched their Third Phase Offensive (also known as the "Chinese New Year's Offensive") on New Year's Eve of 1950. Utilizing night attacks in which UN Command fighting positions were encircled and then assaulted by numerically superior troops who had the element of surprise, the attacks were accompanied by loud trumpets and gongs, which fulfilled the double purpose of facilitating tactical communication and mentally disorienting the enemy. UN forces initially had no familiarity with this tactic, and as a result some soldiers panicked, abandoning their weapons and retreating to the south. The Chinese New Year's Offensive overwhelmed UN forces, allowing the PVA and KPA to conquer Seoul for the second time on 4 January 1951.
Why goals were accomplished the the KPA and PVA's use gongs during these attacks?
A: facilitating tactical communication and mentally disorienting the enemy
Problem: Please answer a question about the following article about Kanye West:
West's fourth studio album, 808s & Heartbreak (2008), marked an even more radical departure from his previous releases, largely abandoning rap and hip hop stylings in favor of a stark electropop sound composed of virtual synthesis, the Roland TR-808 drum machine, and explicitly auto-tuned vocal tracks. Drawing inspiration from artists such as Gary Numan, TJ Swan and Boy George, and maintaining a "minimal but functional" approach towards the album's studio production, West explored the electronic feel produced by Auto-Tune and utilized the sounds created by the 808, manipulating its pitch to produce a distorted, electronic sound; he then sought to juxtapose mechanical sounds with the traditional sounds of taiko drums and choir monks. The album's music features austere production and elements such as dense drums, lengthy strings, droning synthesizers, and somber piano, and drew comparisons to the work of 1980s post-punk and new wave groups, with West himself later confessing an affinity with British post-punk group Joy Division. Rolling Stone journalist Matthew Trammell asserted that the record was ahead of its time and wrote in a 2012 article, "Now that popular music has finally caught up to it, 808s & Heartbreak has revealed itself to be Kanye’s most vulnerable work, and perhaps his most brilliant."
The article about Kanye's fourth album written by Matthew Trammell was published in what magazine?
A: Rolling Stone
Problem: Please answer a question about the following article about Tuvalu:
Captain John Byron passed through the islands of Tuvalu in 1764 during his circumnavigation of the globe as captain of the Dolphin (1751). Byron charted the atolls as Lagoon Islands. Keith S. Chambers and Doug Munro (1980) identified Niutao as the island that Francisco Mourelle de la Rúa sailed past on 5 May 1781, thus solving what Europeans had called The Mystery of Gran Cocal. Mourelle's map and journal named the island El Gran Cocal ('The Great Coconut Plantation'); however, the latitude and longitude was uncertain. Longitude could only be reckoned crudely as accurate chronometers were unavailable until the late 18th century.
How did Byron name the Tuvalu islands?
A: Lagoon Islands
Problem: Please answer a question about the following article about Professional wrestling:
All notable wrestlers now enter the ring accompanied by music, and regularly add other elements to their entrance. The music played during the ring entrance will usually mirror the wrestler's personality. Many wrestlers, particularly in America, have music and lyrics specially written for their ring entrance. While invented long before, the practice of including music with the entrance gained rapid popularity during the 1980s, largely as a result of the huge success of Hulk Hogan and the WWF, and their Rock 'n' Wrestling Connection. When a match is won, the victor's theme music is usually also played in celebration.
What does the music playing indicate? 
A:
the wrestler's personality