Question: What is the singer of Mamo known for?

full_context: Document 1: Anastasia Prikhodko: Anastasia Konstantinivna Prikhodko (Ukrainian: Анастасія Костянтинівна Приходько ; Russian: Анастаси́я Константи́новна Прихо́дько : Anastasia Konstantinovna Prikhodko [also spelt "Prykhodko"]; born April 21, 1987) is a Ukrainian folk rock and traditional pop singer, known for her deep contralto. She won the Russian "Star Factory" contest in 2007 and represented Russia in the Eurovision Song Contest on May 16, 2009 in Moscow, where she finished 11th. In 2014, she vowed never to perform in Russia again because she accused the country of occupying parts of Ukraine.
Document 2: Russia in the Eurovision Song Contest 2009: Russia participated in and hosted the Eurovision Song Contest 2009 in Moscow after winning the Eurovision Song Contest 2008 with the song "Believe" performed by Dima Bilan. The Russian entry was selected through a national final, organised by the Russian broadcaster Channel One Russia (C1R). Anastasia Prikhodko represented Russia with the song "Mamo", which scored 91 points in the final and finished in 11th place.
Document 3: Karaoke on the Maidan: Karaoke on the Maidan was one of the most popular TV projects in Ukraine. Its rates and shares were very high. It was on air during more than 10 years. Ihor Kondratuk was a presenter and coauthor of this TV show. Andrey Kozlov ("What? Where? When?" magister) who is a godfather of Kondratuk's child was as well a coauthor of "Karaoke on the Maidan". This format had been beamed in Russia on TV channel 31 (February 1997 to the end of 1999) before it started in Ukraine on TV channel Inter in 1999. TV channel 1+1 bought the right to broadcast it on air in 2007.
Document 4: Anastasia Chernova: Anastasia Chernova (Ukrainian: Анастасія Чернова, born November 2, 1993) is a Ukrainian teacher, model and beauty pageant titleholder who was crowned Miss Ukraine Universe 2012 in October 2012 and represented Ukraine in the 2012 Miss Universe pageant. 2004 Miss Ukraine Universe winner Oleksandra Nikolayenko helped her prepare for the Miss Universe pageant. Ukrainian designer Anastasiya Sukhanov created the traditional Cossack-inspired dress that Chernova wore at the competition.
Document 5: N.A.T.o. (singer): n.A.T.o. is the stage name of Natalya Shevlyakova (Russian: Наталья Шевлякова ), a Russian singer of Russian and Georgian origin. She is known for dressing in traditional Arab style, with a veil or hijab, and singing in the Tajik, Persian and Uzbek languages. Her concert performances started in 2004 in Moscow, on the anniversary of the September 11 attacks, in a concert with a "terrorist" theme. Her performing career was developed by Russian producer Ivan Shapovalov and she was last seen performing in Germany in May 2005. Her songs often express anti-war themes. One of her most famous anti-war pieces is Chor Javon, (Chorzhavon) originally composed by famous Tajik singer Muboraksho Mirzoshoyev.
Document 6: Anna Nechaeva: Anna Nechaeva is Russian soprano singer who was born in Saratov and used attend its Conservatory in 1996. Later she was offered to perform the role of "Tatiana" in "Eugene Onegin" at the Saint Petersburg Conservatory and by 2003 became a soloist at the Saint Petersburg Opera where she continued her original role as well as other title roles in Giacomo Puccini's "Gianni Schicchi", Madama Butterfly, and "Suor Angelica". From 2008 to 2011 she became a soloist at the Mikhaylovsky Theatre where she performed roles of "Nedda" in "Pagliacci" and "Rachel" in "The Jews" as well as the title roles of "Rusalka" and of course "Tatiana" in "Eugene Onegin". In 2012, she made her first public appearance with Bolshoi Theatre where she sang in "The Enchantress" portraying "Nastasya" becoming soloist there the same year. After her debut, she performed such roles as "Iolanta" in an opera of the same name as well as "Liu" in "Turandot" and "Yaroslavna" in "Prince Igor".
Document 7: Russia in the Eurovision Song Contest 2014: Russia participated in the Eurovision Song Contest 2014 in Copenhagen, Denmark. The Russian entry was selected internally by the Russian broadcaster Russia-1 (RTR). The Tolmachevy Sisters, winners of the Junior Eurovision Song Contest 2006, represented Russia with the song "Shine", which qualified from the first semi-final and placed 7th in the final, scoring 89 points.
Document 8: Alla Pugacheva: Alla Borisovna Pugacheva (Russian: Алла Борисовна Пугачёва ; sometimes transcribed in English as Pugachova, ] ; born 15 April 1949), is а Soviet and Russian musical performer. Her career started in 1965 and continues to this day. For her "clear mezzo-soprano and a full display of sincere emotions", she enjoys an iconic status across the former Soviet Union as the most successful Soviet performer in terms of record sales and popularity.
Document 9: Eurovision Song Contest 2009: The Eurovision Song Contest 2009 was the 54th edition of the annual Eurovision Song Contest and was hosted by Russia after their win in 2008. It took place between 12 and 16 May 2009 at the Olympic Indoor Arena in Moscow, Russia.
Document 10: Ukraine in the Eurovision Dance Contest: Ukraine took part in the first Eurovision Dance Contest in 2007. Representing the country were Yulia Okropiridze, a student of Kyiv National University of Culture and Arts, and Illya Sydorenko, a professional in ballroom choreography. The dances they performed on the night were Quickstep and Showdance. Ukraine came second after receiving 121 points from all other countries. Ukraine is arguably the most successful country to date, with two top 3 positions, despite not winning yet. Lilia Podkopayeva and Kirilo Hitrov represented the country in the 2008 contest. The Third Eurovision Dance Contest has been cancelled indefinitely.
Document 11: Russia in the Eurovision Dance Contest: Russia took part in the first Eurovision Dance Contest in 2007. The couple chosen to represent the country were Vladislav Borodinov and Maria Sittel. The dances they performed at the contest were Rumba and Paso Doble. Russia came seventh after receiving 72 points from 11 countries. In 2008 they were represented by Tatiana Navka and Alexander Litvinenko who danced a fusion of Cha-Cha, Samba, Rumba, Paso Doble and Russian Folk Dance. The Third Eurovision Dance Contest has been cancelled indefinitely.
Document 12: Poland in the Eurovision Song Contest 2009: Poland participated in the Eurovision Song Contest 2009, as confirmed by Polish broadcaster Telewizja Polska (TVP). TVP continued to use the "Piosenka dla Europy" contest to select the Polish representative for the 2009 contest in Moscow. The 2009 edition of the contest was held on 14 February, with the winner decided by jury and televoting. The winner was Lidia Kopania with "I Don't Wanna Leave", represented Poland at the Eurovision Song Contest 2009 in May 2009.
Document 13: Mamo (song): "Mamo" (Ukrainian Cyrillic: Мамо; English translation: "Mum"; Russian translation: Мама (Mama)) is a song by Ukrainian singer Anastasia Prikhodko. It is best known as Russia's entry in the Eurovision Song Contest 2009, held in the Russian capital of Moscow. The song is performed in both Russian and Ukrainian, and was composed by Konstantin Meladze and Diana Golde. The song was first submitted (in the original full Ukrainian variant) for the Ukrainian preselection for that year, but failed to qualify, winning afterwards the Russian preselection.
Document 14: Miss Russia 2009: Miss Russia 2009, Manezh Central Exhibition Hall in Moscow on March 7, 2009. 50 contestants from all over the Russia compete for the crown. the reigning Miss World 2008, Ksenia Sukhinova of Tyumen crowned her successor Sofia Rudieva of Saint Petersburg as the brand new Miss Russia. Dayana Mendoza participated in the event.
Document 15: Annastasia Baker: Annastasia Anneve Baker (born 16 November 1988) is a British Gospel singer, and song writer, Annastasia first caught the public eye as a contestant who progressed into the top six female singers in the judges round of the 2008 edition of The X Factor (UK series 5). Undeterred by not getting past this stage, Annastasia subsequently auditioned for the X Factor 2010 series, The X Factor (UK series 7) and once again made it to the judges round.
ground_truth: her deep contralto