Question: Who is the child of the performer of song La Voix (Song)?

Knowledge 1: La voix (song)
"La voixThe voice") is a song by Swedish singer Malena Ernman, and was the Swedish entry at the 2009 Eurovision Song Contest, held in Moscow, Russia.It was composed by Fredrik Kempe, with lyrics by both Kempe and Ernman.It is the first Swedish entry to contain lyrics in French, as well as being the last Swedish entry to have contained lyrics in another language than English.The song was the winner of Melodifestivalen 2009 on 14 March 2009, and competed for Sweden in the first semi-final of Eurovision 2009 on 12 May 2009.The song qualified for the final round where it finished 21st place with 33 points, making it Sweden's second lowest placing in the Contest since 1992's "I morgon är en annan dag" (#22), and also the second time the country failed to place within the Top 20.In 2010, the song was covered by Russian pop singer Philipp Kirkorov and opera singer Anna Netrebko with Kirkorov singing verses and Netrebko singing chorus.They recorded two versions of the song, one with original French and English lyrics and other sang exclusively in Russian.The song has also been used as the backing track for the musical documentary 'Spaceplane Sailing'.The short film covers the 33-mission career of the Space Shuttle Atlantis and was premiered on YouTube in February 2013. [SEP] Knowledge 2: Malena Ernman
Sara Magdalena Ernman (born) is a Swedish opera singer.Outside the world of opera and operettas, she has also performed chansons, cabaret, jazz, and appeared in musicals; and she has declared that she is very much attracted to the attributes of variété theatre and small, intimate stage rooms.She is a member of The Royal Swedish Academy of Music.Ernman represented Sweden at the Eurovision Song Contest 2009 in Moscow.She is the mother of Time Magazine’s Person of the Year 2019, global warming activist, Greta Thunberg.
Knowledge 1: La voix (song)
"La voixThe voice") is a song by Swedish singer Malena Ernman, and was the Swedish entry at the 2009 Eurovision Song Contest, held in Moscow, Russia.It was composed by Fredrik Kempe, with lyrics by both Kempe and Ernman.It is the first Swedish entry to contain lyrics in French, as well as being the last Swedish entry to have contained lyrics in another language than English.The song was the winner of Melodifestivalen 2009 on 14 March 2009, and competed for Sweden in the first semi-final of Eurovision 2009 on 12 May 2009.The song qualified for the final round where it finished 21st place with 33 points, making it Sweden's second lowest placing in the Contest since 1992's "I morgon är en annan dag" (#22), and also the second time the country failed to place within the Top 20.In 2010, the song was covered by Russian pop singer Philipp Kirkorov and opera singer Anna Netrebko with Kirkorov singing verses and Netrebko singing chorus.They recorded two versions of the song, one with original French and English lyrics and other sang exclusively in Russian.The song has also been used as the backing track for the musical documentary 'Spaceplane Sailing'.The short film covers the 33-mission career of the Space Shuttle Atlantis and was premiered on YouTube in February 2013. [SEP] Knowledge 2: 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.
Knowledge 1: La voix (song)
"La voixThe voice") is a song by Swedish singer Malena Ernman, and was the Swedish entry at the 2009 Eurovision Song Contest, held in Moscow, Russia.It was composed by Fredrik Kempe, with lyrics by both Kempe and Ernman.It is the first Swedish entry to contain lyrics in French, as well as being the last Swedish entry to have contained lyrics in another language than English.The song was the winner of Melodifestivalen 2009 on 14 March 2009, and competed for Sweden in the first semi-final of Eurovision 2009 on 12 May 2009.The song qualified for the final round where it finished 21st place with 33 points, making it Sweden's second lowest placing in the Contest since 1992's "I morgon är en annan dag" (#22), and also the second time the country failed to place within the Top 20.In 2010, the song was covered by Russian pop singer Philipp Kirkorov and opera singer Anna Netrebko with Kirkorov singing verses and Netrebko singing chorus.They recorded two versions of the song, one with original French and English lyrics and other sang exclusively in Russian.The song has also been used as the backing track for the musical documentary 'Spaceplane Sailing'.The short film covers the 33-mission career of the Space Shuttle Atlantis and was premiered on YouTube in February 2013. [SEP] Knowledge 2: 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.

Answer: Greta Thunberg