Question: Who is We Belong Together, by the singer of the Christmas song All I Want for Christmas is You, about?

full_context: Document 1: We Belong Together: The song's music video was filmed as a two - part story with ``It's Like That '', which featured Carey at her bachelorette party. The video for`` We Belong Together'' is a continuation focusing on Carey's wedding to an older and powerful man and ends with the singer eloping with her ex-lover. Rumors arose of the video's connection to her 1993 marriage to Tommy Mottola. Carey performed the song on several award shows and television appearances around the world, namely MTV Movie Awards, MTV Video Music Awards, Macy's Fourth of July Parade, The Oprah Winfrey Show and the 48th Grammy Awards. In Europe the song was performed at the Live 8 charity concert, the Fashion Rocks in Monaco, and the German Bambi Awards. Carey performed the song on both her Adventures of Mimi and Angels Advocate Tours.
Document 2: You Belong with Me: The song's accompanying music video was directed by Roman White. The video featured Swift portraying two characters, a nerd (the protagonist and narrator) and a popular girl (the antagonist and girlfriend), while American actor Lucas Till portrayed the male lead. The video's plot centers on the protagonist secretively loving the male lead, although he has a girlfriend. The video won the MTV Video Music Award for Best Female Video at the 2009 MTV Video Music Awards, but during Swift's acceptance speech, rapper Kanye West interrupted, protesting in support of Beyoncé. The incident caused a reaction in the media, with many coming to Swift's defense. The song was performed live at numerous venues, including the 2009 -- 10 Fearless Tour, where it was the opening number. It was covered by various artists, including Butch Walker and Selena Gomez & the Scene, and parodied by ``Weird Al ''Yankovic.
Document 3: All I Want for Christmas Is My Two Front Teeth: ``All I Want for Christmas Is My Two Front Teeth ''is a novelty Christmas song written in 1944 by Donald Yetter Gardner while teaching music at public schools in Smithtown, New York. He asked his second grade class what they wanted for Christmas, and noticed that almost all of the students had at least one front tooth missing as they answered in a lisp. Gardner wrote the song in 30 minutes. In a 1995 interview, Gardner said,`` I was amazed at the way that silly little song was picked up by the whole country.'' The song was published in 1948 after an employee of Witmark music company heard Gardner sing it at a music teachers conference.
Document 4: Beyoncé: Beyoncé is believed to have first started a relationship with Jay Z after a collaboration on "'03 Bonnie & Clyde", which appeared on his seventh album The Blueprint 2: The Gift & The Curse (2002). Beyoncé appeared as Jay Z's girlfriend in the music video for the song, which would further fuel speculation of their relationship. On April 4, 2008, Beyoncé and Jay Z were married without publicity. As of April 2014, the couple have sold a combined 300 million records together. The couple are known for their private relationship, although they have appeared to become more relaxed in recent years. Beyoncé suffered a miscarriage in 2010 or 2011, describing it as "the saddest thing" she had ever endured. She returned to the studio and wrote music in order to cope with the loss. In April 2011, Beyoncé and Jay Z traveled to Paris in order to shoot the album cover for her 4, and unexpectedly became pregnant in Paris.
Document 5: All I Want for Christmas Is You: ``All I Want for Christmas Is You ''is a Christmas song performed by American singer and songwriter Mariah Carey. She wrote and produced the song alongside Walter Afanasieff. Columbia Records released it on November 1, 1994, as the lead single from her fourth studio album and first holiday album, Merry Christmas (1994). It is an uptempo love song that includes bell chimes, heavy back - up vocals, and synthesizers.
Document 6: Upgrade U: The music video for the song was directed by Melina Matsoukas, and took one and a half days of shooting. Knowles did an impersonation of Jay-Z in the clip and is also seen amidst gold watches and jewelry, continuing the motif of luxury that is alluded to in the song. It finally emerged as the forty-fifth best R&B/Hip-Hop song of 2007 in the United States. Although Knowles did not perform "Upgrade U" in any televised appearances, the song was a part of her set list on The Beyoncé Experience tour (2007), and I Am... Tour (2009–10), as well as her and Jay Z's joint On the Run Tour (2014).
Document 7: My Only Wish (This Year): "My Only Wish (This Year)" is a pop Christmas song performed by American recording artist Britney Spears. It was written by Brian Kierulf, Josh Schwartz and Spears. It was released originally in the Christmas compilation album "Platinum Christmas". In it Spears asks Santa Claus to find her a lover during the holidays. The track received mixed to positive reviews from music critics. However, close to a decade after its release, reviewers felt the song could be considered a holiday classic. "My Only Wish (This Year)" has charted in various countries, mainly on Billboard's Holiday Songs in 2011 and 2012. On October 22, 2013, an audio-only video of the song was uploaded on Britney Spears' Vevo account.
Document 8: All I Want for Christmas Is You: ``All I Want for Christmas Is You ''is a Christmas song performed by American singer and songwriter Mariah Carey. She wrote and produced the song with Walter Afanasieff. Columbia Records released it on November 1, 1994, as the lead single from her first holiday album and fourth studio album, Merry Christmas.`` Christmas'' is an uptempo love song that includes bell chimes and heavy back - up vocals, as well as use of synthesizers.
Document 9: Katy Perry: Part of Me: The film features interviews with Perry and her loved ones documenting the trajectory of her life, containing various clips from her childhood and teenage years as well as her career and personal life. The film is spliced with performances from her worldwide California Dreams Tour, which had 127 concerts from February 20, 2011 to January 22, 2012. Most of the performances were recorded on November 23, 2011, at the Staples Center in Los Angeles, but also included performances in Tokyo and São Paulo. Some of her friends such as Rihanna, Lady Gaga, Adele and Jessie J make cameos in the film. The documentary includes scenes of Perry dealing with the breakdown of her marriage with English actor/comedian Russell Brand.
Document 10: Madonna (entertainer): From the beginning of 2014, Madonna began to make multiple media appearances. She appeared at the 56th Annual Grammy Awards in January 2014, performing "Open Your Heart" alongside rappers Macklemore & Ryan Lewis and singer Mary Lambert, who sang their single "Same Love", as 33 couples were wed onstage, officiated by Queen Latifah. Days later, she joined singer Miley Cyrus on her MTV Unplugged special, singing a mash-up of "Don't Tell Me" and Cyrus' single "We Can't Stop" (2013). She also extended her business ventures and in February 2014 the singer premiered MDNA Skin, a range of skin care products, in Tokyo, Japan. After visiting her hometown of Detroit during May 2014, Madonna decided to contribute funds to three of the city's organizations, to help eliminate poverty from there. The singer released a statement saying that she was inspired by their work, adding that "it was obvious to me that I had to get involved and be part of the solution to help Detroit recover".
Document 11: Christmas Time Is in the Air Again: "Christmas Time is in the Air Again" is a song by American singer and songwriter Mariah Carey from her second Christmas album and thirteenth studio album, "Merry Christmas II You" (2010). It was written and produced by Carey in collaboration with Broadway composer Marc Shaiman. Lyrically, it is about finding love during the Christmas season. The track garnered positive reviews from critics, with one describing it as an outstanding performance and the only song on the album that could compare to one of Carey's previous Christmas singles, "All I Want for Christmas Is You". It was released as a promotional single in December 2012. An accompanying lyric video was released, and Carey has performed "Christmas Time Is in the Air Again" live on NBC's "Christmas in Rockefeller Centre" event and during her December 2014 Beacon Theatre residency called All I Want For Christmas Is You, A Night of Joy & Festivity.
Document 12: Heartbreaker (Mariah Carey song): Carey performed "Heartbreaker" live on several television and award show appearances around the world, as well as on her concert tours. The accompanying music video for "Heartbreaker", directed by Brett Ratner, is one of the most expensive ever made, costing over $2.5 million. The video features Carey and her friends visiting a film theater and catching her boyfriend (played by Jerry O'Connell) on a date with another woman. Carey played herself and a brunette villainess named Bianca, during a physical altercation scene in between the two women. Due to contractual agreements at the time of its filming, Jay-Z was unable to make an appearance in the video, instead being portrayed as an animated cartoon. The video was inspired by several films, including "Grease" and "Enter the Dragon".
Document 13: We Are Never Ever Getting Back Together: The video, which is done seemingly as one continuous shot, begins with Swift in colorful pajamas recounting the events of her off and on again relationship with her ex-boyfriend (played by Noah Mills). The video then segues into Swift going into her living room where her band is dressed up in animal costumes and Swift belts out the chorus of the song. The video then goes to a TV where Swift says ``Like, ever. ''and then to the dining room where we see she returns to recounting the events of her relationship and receives a phone call from her ex who is calling her from a nightclub. Swift hangs up on him and he walks off screen into the nightclub. It then goes to the two in a truck having an argument then to them having a stroll in the park. Swift then runs off and we see her on the phone telling the person on the other line how she and her ex are not getting back together and her frustration of their entire relationship. The video then segues back to Swift's living room where a party is going on and her ex shows up unannounced trying to woo her back and she slams the door in his face. The video ends with Swift on her window ledge where she was at the beginning of the video, singing the last line of the song.
Document 14: 4 Carats: "4 Carats" is a song by American recording artist Kelly Clarkson, from her sixth studio album, "Wrapped in Red" (2013). Written by Clarkson, Cathy Dennis, Livvi Franc, with Greg Kurstin, who helmed the song's production. A Christmas pop song, "4 Carats" was originally written for Clarkson's seventh studio album that would have followed-up "Wrapped in Red". Lyrically, the song explores the themes of holiday gift giving and materialism, with the singer asking Santa Claus for a four carat gemstone ring for Christmas day. Clarkson took inspirations from the songs "Santa Baby" (1953) and "Material Girl" (1984), sung by Eartha Kitt and Madonna, respectively, and described it as a crossover between the two.
Document 15: Christmas (Michael Bublé album): The album is Bublé's second Christmas - themed release, after he released a five - track extended play, titled Let It Snow. Some of the songs from Let It Snow have been re-recorded for inclusion on Christmas, making Christmas his first full - length holiday release. For the album, Bublé teamed up with several well - known artists to record duets. His duet version of ``White Christmas ''with country music singer Shania Twain was based on an early arrangement by The Drifters, while his recording of`` Jingle Bells'' with The Puppini Sisters was based on the 1943 recording of Bing Crosby and The Andrews Sisters. He also teamed up with Latin star Thalía for a recording of ``Feliz Navidad ''. Bublé also recorded covers of Mariah Carey's`` All I Want for Christmas Is You'', and ``Blue Christmas '', and a brand new track,`` Cold December Night'', written with his longtime co-writer Alan Chang and producer Bob Rock.
ground_truth: Tommy Mottola
sub_queries: who sings the christmas song all i want for christmas is you Answer: Mariah Carey
who is we belong together by Mariah Carey about Answer: Tommy Mottola