Question: In 2011, who became the CEO of the record label of You Lost Me?

full_context: Document 1: Sony Music: In 1966, CBS reorganized its corporate structure with Leiberson promoted to head the new "CBS-Columbia Group" which made the now renamed CBS Records company a separate unit of this new group run by Clive Davis.
Document 2: Blank Page: "Blank Page" is a song recorded by American singer-songwriter Christina Aguilera, taken from her seventh studio album, "Lotus" (2012). It was written by Aguilera, Chris Braide and Sia Furler, with production done by Braide. Aguilera had worked with Furler on her previous two albums "Bionic" and "Burlesque", both released in 2010. Following the release of "Lotus", Aguilera revealed that Furler is one of her favorite people to work with and that she is very inspiring.
Document 3: Bionic (Christina Aguilera song): "Bionic" is a song recorded by American recording artist Christina Aguilera, taken from her sixth studio album of the same name (2010). The song was written by Aguilera, Kalenna Harper, John Hill and Switch, while production was done by the latter two. "Bionic" is an electronic number and has garnered comparisons to works by artists including Santigold and Janet Jackson.
Document 4: Sony Music: Doug Morris, who was head of Warner Music Group, then Universal Music, became chairman and CEO of the company on July 1, 2011. Sony Music underwent a restructuring after Morris' arrival. He was joined by L.A. Reid, who became the chairman and CEO of Epic Records. Under Reid, multiple artists from the Jive half of the former RCA/Jive Label Group moved to Epic. Peter Edge became the new CEO of the RCA Records unit. The RCA Music Group closed down Arista, J Records and Jive Records in October 2011, with the artists from those labels being moved to RCA Records.
Document 5: IPod: Universal Music Group decided not to renew their contract with the iTunes Store on July 3, 2007. Universal will now supply iTunes in an 'at will' capacity.
Document 6: British Academy of Songwriters, Composers, and Authors: In 1999 The Association of Professional Composers (APC) and the Composers' Guild of Great Britain (CGGB) merged with the British Academy of Songwriters, Composers and Authors to provide a single, more powerful amalgamated organisation to represent its membership. The organization's current name was adopted in March, 2009. Sir Tim Rice was elected first president, and Guy Fletcher and David Stoll served as joint chairs of a nine-member Board of Directors. Three executive committees were established to administer Pop and Theatrical Music, Concert Music and Media. BASCA now has four genre committees representing Songwriters, Classical, Jazz and Media composers.
Document 7: Bertelsmann Music Group: BMG Music Publishing, which was not part of the Sony BMG merger, was a business of the Bertelsmann Music Group until it was sold to Universal Music Group for €1.63 billion in 2007. Universal then folded the company into Universal Music Publishing Group, and the BMG name was retired. The company was headquartered at 245 Fifth Avenue, 8th Floor New York, New York 10016 and had operations in 36 offices in 25 countries.
Document 8: You Lost Me: "You Lost Me" is a song by American recording artist Christina Aguilera from her sixth studio album "Bionic" (2010). It was written by Aguilera, Sia Furler, and the producer Samuel Dixon. "You Lost Me" was released on June 27, 2010, by RCA Records as the third single from "Bionic" in the United States and the second elsewhere. The track is a down-tempo ballad that talks about an unfaithful man, who has left Aguilera's world "infected".
Document 9: Sony Music: In March 2010, Sony Corp has partnered with The Michael Jackson Company with a contract of more than $250 million, the largest deal in recorded music history.
Document 10: Sony Music: Columbia founded Epic Records in 1953. In 1956, Conkling left Columbia, he would help establish the National Academy of Recording Arts and Sciences before eventually becoming the first president of the newly launched Warner Bros. Records, and Goddard Lieberson began the first of two stints as head of the record company. In 1958, Columbia founded another label, Date Records, which initially issued rockabilly music.
Document 11: Sony Music: Sony Music Entertainment Inc. (sometimes known as Sony Music or by the initials, SME) is an American music corporation managed and operated by Sony Corporation of America (SCA), a subsidiary of Japanese conglomerate Sony Corporation. In 1929, the enterprise was first founded as American Record Corporation (ARC) and, in 1938, was renamed Columbia Recording Corporation, following ARC's acquisition by CBS. In 1966, the company was reorganized to become CBS Records. In 1987, Sony Corporation of Japan bought the company, and in 1991, renamed it SME. It is the world's second largest recorded music company, after Universal Music Group.
Document 12: Sia (musician): Sia relocated to New York City in 2005 and toured in the United States. Her fourth and fifth studio albums, Some People Have Real Problems and We Are Born, were released in 2008 and 2010, respectively. Each was certified gold by the Australian Recording Industry Association and attracted wider notice than her earlier albums. Uncomfortable with her growing fame, Sia took a hiatus from performing, during which she focused on songwriting for other artists, producing successful collaborations "Titanium" (with David Guetta), "Diamonds" (with Rihanna) and "Wild Ones" (with Flo Rida).
Document 13: Glam (song): "Glam" is a song by American recording artist Christina Aguilera, taken from her sixth studio album "Bionic" (2010). The song was written by Aguilera, Claude Kelly and C. "Tricky" Stewart, with production was handled by Stewart. The song talks about getting glam and sexy before a night out. According to Aguilera and Kelly, "Glam" was a throwback to Madonna's "Vogue" (1990).
Document 14: I Hate Boys: "I Hate Boys" is a song recorded by American recording artist Christina Aguilera for her sixth studio album, "Bionic" (2010). The song was written by Aguilera, Ester Dean, William Tyler, Bill Wellings, J. J. Hunter and Jamal Jones, who also handled the production of the track. "I Hate Boys" is a glam rock and pop song, containing elements of urban pop and synthpop. Lyrically, it is a hate-driven song about ridiculing bad boys.
Document 15: Sing for Me (Christina Aguilera song): "Sing for Me" is a song recorded by American recording artist Christina Aguilera for her seventh studio album, "Lotus" (2012). It was written by Ginny Blackmore, Aguilera and producer Aeon "Step" Manahan. Described by Aguilera as being one of the more emotional tracks on "Lotus", the song was inspired by the music of Whitney Houston, Mariah Carey, and Etta James, to which she had frequently listened while growing up.
ground_truth: Peter Edge
sub_queries: What was the record label of You Lost Me? Answer: RCA Records
Who became the CEO of RCA Records ? Answer: Peter Edge