question: What nationality is the performer of song Some Of These Days?
context: [["O Valencia!", ["\" O Valencia!\" is the fifth single by the indie rock band", "The Decemberists, and the first released from their fourth studio album,\" The Crane Wife\".", "The music was written by The Decemberists and the lyrics by Colin Meloy.", "It tells a story of two star- crossed lovers.", "The singer falls in love with a person who belongs to an opposing gang.", "At the end of the song, the singer's lover jumps in to defend the singer, who is confronting his lover's brother( the singer's\" sworn enemy\") and is killed by the bullet intended for the singer."]], ["Caspar Babypants", ["Caspar Babypants is the stage name of children's music artist Chris Ballew, who is also widely known as the singer of The Presidents of the United States of America."]], ["These Days (Jackson Browne song)", ["\" These Days\" is a song written by Jackson Browne and recorded by numerous artists.", "Browne wrote the song at age 16; its lyrics deal with loss and regret.", "It was first recorded by Nico in 1967 for her album\" Chelsea Girl\" and in 1970 by Tom Rush.", "Gregg Allman recorded a new arrangement of the song in 1973 on\" Laid Back\", and Browne recorded the Allman arrangement on\" For Everyman\" the same year.", "\" These Days\" has also been recorded by Paul Westerberg, St. Vincent, Fountains of Wayne, Mates of State, and Drake, among others.", "According to Randall Roberts at the\" Los Angeles Times\", the song has\" quietly become a classic\" over the years.", "Pitchfork Media's 2006 ranking of\" The 200 Greatest Songs of the 1960s\" placed the Nico version of\" These Days\" at number 31."]], ["Billy Milano", ["Billy Milano is a Bronx- born heavy metal musician now based in Austin, Texas.", "He is the singer and- occasionally- guitarist and bassist of crossover thrash band M.O.D., and he was also the singer of its predecessor, Stormtroopers of Death.", "He was also the singer of United Forces, which also featured his Stormtroopers of Death bandmate Dan Lilker."]], ["D\u00e1ith\u00ed Sproule", ["D\u00e1ith\u00ed Sproule( born 23 May 1950) is a guitarist and singer of traditional Irish music.", "His niece is the singer Claire Sproule."]], ["Some of These Days", ["\"Some of These Days\" is a popular song, written and composed by Shelton Brooks, published in 1910, and associated with the performer Sophie Tucker."]], ["Bernie Bonvoisin", ["Bernard Bonvoisin, known as Bernie Bonvoisin( born 9 July 1956 in Nanterre, Hauts- de- Seine), is a French hard rock singer and film director.", "He is best known for having been the singer of Trust.", "He was one of the best friends of Bon Scott the singer of AC/ DC and together they recorded the song\" Ride On\" which was one of the last songs by Bon Scott."]], ["Kristian Leontiou", ["Kristian Leontiou (born February 1982) is a British singer of Greek Cypriot descent, and is the singer for the indie rock band One eskimO."]], ["These Days (Powderfinger song)", ["\" These Days\" is an alternative rock song from Powderfinger's fourth studio album,\" Odyssey Number Five\", which was released in 1999.", "The song was also released on Powderfinger's 2004 compilation album.", "\" These Days\" was not released as a single, however it topped the Triple J Hottest 100 chart in 1999.", "It was also awarded\" Song of the Year\" at the 2000 Music Critic's Awards.", "Powderfinger have described\" These Days\" as one of their most simple, enduring, and popular works to date."]], ["Sophie Tucker", ["Sophie Tucker (January 13, 1886 \u2013 February 9, 1966) was a Ukrainian-born American singer, comedian, actress, and radio personality.", "Known for her powerful delivery of comical and risqu\u00e9 songs, she was one of the most popular entertainers in America during the first half of the 20th century.", "She was widely known by the superlative nickname \"The Last of the Red Hot Mamas\"."]]]
supporting_facts: [["Some of These Days", 0], ["Sophie Tucker", 0]]
evidences: [["Some of These Days", "performer", "Sophie Tucker"], ["Sophie Tucker", "country of citizenship", "America"]]
answer: America