What is the answer for the question: What was the full name of the organization that certified the album 6× platinum? from the following article ?  Ride the Lightning is the second studio album by American heavy metal band Metallica, released on July 27, 1984, by the independent record label Megaforce Records. The album was recorded in three weeks with producer Flemming Rasmussen at the Sweet Silence Studios in Copenhagen, Denmark. The artwork, based on a concept by the band, depicts an electric chair being struck by lightning flowing from the band logo. The title was taken from a passage in Stephen King's novel The Stand. Although rooted in the thrash metal genre, the album showcased the band's musical growth and lyrical sophistication. This was partly because bassist Cliff Burton introduced the basics of music theory to the rest of the band and had more input in the songwriting. Instead of relying strictly on fast tempos as on its debut Kill 'Em All, Metallica broadened its approach by employing acoustic guitars, extended instrumentals, and more complex harmonies. The overall recording costs were paid by Metallica's European label Music for Nations because Megaforce was unable to cover it. It was the last album to feature songwriting contributions from former lead guitarist Dave Mustaine, and the first to feature contributions from his replacement, Kirk Hammett. Ride the Lightning received positive response from music critics, who saw it as a more ambitious effort than its predecessor. Metallica promoted the album on the Bang That Head That Doesn't Bang European tour in late 1984, and on its North American leg in the first half of 1985. The band performed at major music festivals such as Monsters of Rock and Day on the Green later that year. Two months after its release, Elektra Records signed Metallica to a multi-year deal and reissued the album. Ride the Lightning peaked at number 100 on the Billboard 200 with no radio exposure. Although 75,000 copies were initially pressed for the American market, the album sold half a million by November 1987. It was certified 6× platinum by the Recording Industry Association of America (RIAA) in 2012 for shipping...
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Answer: Recording Industry Association of America


What is the answer for the question: What was the full name of the person who joined Madonna in person for the show at Los Angeles's Dodger Stadium? from the following article ?  The song was performed during the Hard Candy Promo Tour and Sticky & Sweet Tour (2008–2009). At the promotional tour, "4 Minutes" was performed as the third song of the setlist. Madonna wore a shiny black outfit with black tails, Adidas track pants and high-heeled, lace-up boots for the performance. Justin Timberlake made an appearance alongside Madonna, at the Roseland Ballroom in New York, to perform the song. As Timbaland appeared on the video screens, the beat of the song started. The four side-stage video screens began to glide across the stage, and swiveled around to reveal Timberlake behind one and Madonna behind the other. They performed the song in a similar choreography from the music video.During the "4 Minutes" performance on the Sticky & Sweet Tour, Madonna wore a futuristic robotic outfit designed by Heatherette. She coupled it with metallic plates on her shoulder and a wig with long curled hair. Madonna and her dancers emerged from behind backdrops, on which Timbaland and Timberlake appeared, to perform their lines. An apparent duet between Madonna and Timberlake ensues, with Timberlake singing and dancing his part from the screens. He joined Madonna in person, for the show at Los Angeles's Dodger Stadium on November 6, 2008, the same show in which Britney Spears appeared alongside Madonna to perform "Human Nature". They performed "4 Minutes" in similar fashion to the promotional tour choreography. Timbaland sang his part of the song in person on November 26, 2008 at Dolphin Stadium in Miami Gardens, Florida. "4 Minutes" was also used as mashups during the performance of songs like "Vogue" and "Hung Up". On July 27, 2017, Madonna made a special appearance at Leonardo DiCaprio's annual fundraising gala, which took place on Saint-Tropez, France, and performed "4 Minutes" dressed in a green suit with feathers.
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Answer: Justin Timberlake


What is the answer for the question: What is the last name of the person who had weakened technical mastery? from the following article ?  During the 1950s, Szigeti began to develop arthritis in his hands and his playing deteriorated. Despite his weakened technical mastery, his intellect and musical expression were still strong, and he continued to draw large audiences to his concerts. In Naples, Italy, in November 1956, just after the Soviets crushed the Hungarian uprising, as soon as he walked onto the stage the audience burst into wild applause and shouts of Viva l’Ungheria! (Italian for "Long live Hungary!"), delaying the concert for nearly fifteen minutes.In 1960 Szigeti officially retired from performing, and returned to Switzerland with his wife. There he devoted himself primarily to teaching, although he still traveled regularly to judge international violin competitions. Top-class students from all over Europe and the United States came to study under him. One of these students was Arnold Steinhardt, who spent the summer of 1962 with Szigeti. He came to the conclusion that "Joseph Szigeti was a template for the musician I would like to become: inquisitive, innovative, sensitive, feeling, informed".Toward the end of his life, Szigeti suffered from frail health. He was put on strict diets and had several stays in hospital, but his friends asserted that this did nothing to dampen his characteristic cheerfulness. He died in Lucerne, Switzerland on February 19, 1973, at the age of 80. The New York Times ran a front-page obituary that ended with this 1966 quote from violinist Yehudi Menuhin: We must be humbly grateful that the breed of cultured and chivalrous violin virtuosos, aristocrats as human beings and as musicians, has survived into our hostile age in the person of Joseph Szigeti.
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Answer:
Szigeti