Question: Who won the Americana music award for duo/group of the year, Raul Malo or Nick Gilder?

full_context: Document 1: Tim Rushlow: Timothy Ray "Tim" Rushlow (born October 6, 1966) is an American country music artist. Between 1991 and 1997, Rushlow was lead vocalist of country music group Little Texas, which recorded four albums and a Greatest Hits package, in addition to charting more than fifteen singles on the "Billboard" country singles charts during Rushlow's tenure as lead vocalist.
Document 2: Nick Morris: Nick Morris is a film maker who began writing and making amateur films at school, one of which was shown at the NFT. His professional career began in the 1980s with music videos for "The Final Countdown" by Europe, "Kyrie" by Mr. Mister and "Everytime You Go Away" by Paul Young. After making approximately 100 promos for artists such as Elton John, Celine Dion, Alison Moyet, Warrant, Terence Trent D'Arby, Stevie Wonder, Paul Carrack, Prefab Sprout, Kirsty MacColl, Go West, the Kane Gang, The Alarm, Status Quo, Toto, Natalie Cole, Nena, Scorpions and the number one charity single Ferry Aid, he moved into longer form projects including the Cirque du Soleil show "Alegría", which was nominated for a primetime Emmy, "Jesus Christ Superstar", which won an International Emmy, and AC/DC's "Stiff Upper Lip Live" in Munich. He has also directed DVDs for comedians such as The Mighty Boosh, Mitchell and Webb and Bill Bailey. Other work includes numerous trailers and music clips for West End shows such as "The Producers", "Spamalot", "Calendar Girls", "Guys and Dolls", "Edward Scissorhands" and "The Rocky Horror Show". in 2009 he captured Spandau Ballet's triumphant homecoming concert at the O2 Arena in London and Jude Law's portrayal of Hamlet.
Document 3: Los Super Seven (album): Los Super Seven is a studio album released by supergroup Los Super Seven. It was released in September 15, 1998 by RCA Nashville. Freddy Fender and Flaco Jiménez, both from Texas Tornados, formed Los Super Seven, along Joe Ely, Rick Trevino, David Hidalgo and Cesar Rosas (of the Los Lobos' fame), and Tejano vocalist Ruben Ramos. The album peaked at number-one in the "Billboard" Regional Mexican Albums chart and reached top ten in the "Billboard" Top Latin Song chart. "Los Super Seven" earned them the Grammy Award for Best Mexican-American Performance at the 41st Grammy Awards. A portion of the proceeds of the album were destined to the National Council of La Raza a non-profit organization that represents Latino interests and causes.
Document 4: Nick Cave: Nicholas Edward Cave {'1': ", '2': ", '3': ", '4': "} (born 22 September 1957) is an Australian musician, singer-songwriter, author, screenwriter, composer and occasional film actor, best known as the frontman of the rock band Nick Cave and the Bad Seeds. Referred to as rock music's "Prince of Darkness", Cave's music is generally characterised by emotional intensity, a wide variety of influences, and lyrical obsessions with death, religion, love and violence.
Document 5: Raul Malo: Raúl Francisco Martínez-Malo Jr. (born August 7, 1965 in Miami, Florida), known professionally as Raúl Malo, is an American singer, songwriter, guitarist and record producer. He is the lead singer of country music band The Mavericks and the co-writer of many of their singles, as well as Rick Trevino's 2003 single "In My Dreams". After the disbanding of The Mavericks in the early 2000s, Malo pursued a solo career. He has also participated from 2001 in the Los Super Seven supergroup. The Mavericks re-formed in 2012 and continue to tour extensively. In 2015 they won the Americana music award for duo/group of the year.
Document 6: Marty Raybon: Marty Raybon (born December 8, 1959) is an American country music artist. He is known primarily for his role as the lead singer of the band Shenandoah, a role which he held from 1985 to 1997, until he rejoined the band in 2014. He recorded his first solo album, "Marty Raybon", in 1995 on Sparrow Records. Before leaving Shenandoah in 1997, he and his brother Tim formed a duo known as the Raybon Brothers, which had crossover success that year with the hit single "Butterfly Kisses".
Document 7: Nick Gilder: Nicholas George "Nick" Gilder (born 21 December 1951), is an English-Canadian musician who first came to prominence as the frontman for the glam rock band Sweeney Todd. He later had a successful solo career as a singer/songwriter.
Document 8: Nick Gilder (album): Nick Gilder by Nick Gilder was released in 1985 on the RCA Records label.
Document 9: Rick Trevino: Ricardo Treviño, Jr. (born May 16, 1971), known professionally as Rick Trevino, is a Grammy-Award winning Mexican American country music artist. Signed to Columbia Nashville in 1993, Trevino began his career that year with the release of his debut single, "Just Enough Rope", the first mainstream country music single to feature separate English and Spanish-language versions. The song was included on his debut album "Dos Mundos"; a self-titled album followed a year later. Trevino has charted a total of fourteen singles on the "Billboard" Hot Country Songs charts, and recorded seven studio albums. His highest-charting singles were, "Running Out of Reasons to Run" (Billboard #1), "Learning As You Go" (R&R #1) and "She Can't Say I Didn't Cry" (R&R #1).
Document 10: Nick Lowe: Nicholas Drain Lowe (born 24 March 1949), known as Nick Lowe, is an English singer-songwriter, musician, and producer.
Document 11: In My Dreams (Rick Trevino album): In My Dreams is the sixth studio album released by country music artist Rick Trevino. It was produced by Raul Malo, lead singer for the alternative country band The Mavericks. Malo and Jaime Hanna, another former member of the Mavericks (who, in 2005, would pair up with Jonathan McEuen to form the duo Hanna-McEuen), co-wrote the majority of this album's songs with Trevino and Alan Miller. The only exception is a cover of "Have You Ever Really Loved a Woman", a cover of the Bryan Adams song from 1995.
Document 12: Gary Glitter: Paul Francis Gadd (born 8 May 1944), known by the stage name Gary Glitter, is an English former glam rock singer, who achieved popular success in the 1970s and 80s. He was known for his extreme glam image of glitter suits, make-up and platform boots, and his energetic live performances. He sold over 20 million records, spent 168 weeks on the UK Singles Chart and had 21 hit singles placing him in the Top 100 UK most successful chart acts. From 1997, he returned to public notice for committing sex offences, being imprisoned for downloading child pornography in 1999, and child sexual abuse and attempted rape in 2006 and 2015.
Document 13: Stairways (album): Stairways by Nick Gilder was released in 1997 on the Spinner Music Group Inc./Gilder Records labels.
Document 14: Dee Snider: Daniel "Dee" Snider (born March 15, 1955) is an American singer-songwriter, screenwriter, radio personality, and actor. Snider came to prominence in the early 1980s as lead singer of the heavy metal band Twisted Sister. He was ranked 83 in the "Hit Parader"<nowiki>'</nowiki>s Top 100 Metal Vocalists of All Time.
Document 15: Randy Travis: Randy Bruce Traywick (born May 4, 1959), better known by his stage name, Randy Travis, is an American country music singer, songwriter, guitarist, and actor. Since 1985, he has recorded 20 studio albums and charted more than 50 singles on the "Billboard" Hot Country Songs charts, and 16 of these were number-one hits. Considered a pivotal figure in the history of country music, Travis broke through in the mid-1980s with the release of his album "Storms of Life", which sold more than four million copies. The album established him as a major force in the Neotraditional country movement. Travis followed up his successful debut with a string of platinum and multi-platinum albums. He is known for his distinctive baritone vocals, delivered in a traditional style that has made him a country music star since the 1980s.
ground_truth: Raúl Malo