Question: Which singer of "So What" married Carey Hart in 2006?

Context paragraphs:
MTX Mototrax: MTX Mototrax (originally under the working title "Travis Pastrana's Pro MotoX") is a Motocross video game made by Left Field Productions and published by Activision for the PlayStation 2 and Xbox in 2004.  It was released for Microsoft Windows and Mac OS X (Europe only) later that year.  Both the Windows and OS X versions were developed and published by Aspyr.  It was released in 2006 for the PlayStation Portable.  The game was also set for release for the Nintendo GameCube console in 2004 but was later canceled.  It was also planned to be released for the Tapwave Zodiac, but that was canceled as well when Tapwave went out of business.  It features many of the top AMA Supercross/Motocross racers and X Games Freestylers of that time (2004), including Travis Pastrana, Nate Adams, Kenny Bartram, Carey Hart, Chad Reed, Tim Ferry, Mike Brown, Ezra Lusk, and many more.  The first level in career mode is held at Pastrana's house.

Funhouse (song): "Funhouse" is the fifth single from American singer-songwriter Pink's fifth studio album of the same name.  The track was written by P!nk, Jimmy Harry and Tony Kanal who also produced the song.  It holds the title of the album and, just like most of the album's tracks, the song speaks about P!nk's split with motocrossrider Carey Hart.  Pink performed the song on September 16, 2009 on the Jimmy Kimmel Live!  concert stage.

So What (Pink song): "So What" is a song recorded by American singer Pink for her fifth studio album, "Funhouse" (2008).  The song was written by Pink, Max Martin, and Shellback, and produced by Martin.  Selected as the album's debut single, "So What" was first released to mainstream radios on August 25, 2008, through LaFace and Zomba Label Group.  The song consists of a martial beat and synth backing.  The lyrics are based on her separation from motocross racer Carey Hart, which occurred six months prior to the release.

Carey &amp; Hart: Carey & Hart was an American publishing company founded in Philadelphia, Pennsylvania in 1829 by Edward L. Carey and Abraham Hart.

Arthur Gaskin (squash player): Arthur Gaskin (born January 16, 1985 in Dublin) is a professional squash player who represented Ireland.  He reached a career-high world ranking of World No. 80 in June 2009.  Arthur married Carey Harte in 2016.

Edward L. Carey: Edward L. Carey (1806–June 16, 1845) was an American publisher and Aesthete, notable for co-founding the publishing firm Carey & Hart alongside Abraham Hart.

Joel Hart (basketball): Joel Hart (born 24 August 1984 in Christchurch, New Zealand), is a New Zealand basketballer who currently plays as a point guard for the Canterbury Rams in the New Zealand National Basketball League.  Hart played his high school basketball at Kaiapoi High School where he excelled, eventually making the New Zealand Under 19 basketball team.  In the 2003 NBL season, Hart made his Canterbury Rams debut playing in three matches, without scoring a point.  During the 2004 and 2005 NBL season's he featured in a handful of matches also, but without much impact.  In the current 2006 New Zealand National Basketball League season, Hart is relishing playing under new rams head coach, Chris Sparks, where he is backing up Jeremy Kench at the point guard position.  On 11 May 2006 Hart had a then career high ten points in a victory over the Taranaki Mountain Airs .  Hart then backed this up with an outstanding all round performance on 27 May 2006 registering a new career high of 23 points against the Waikato Pistons, where he hit 4 three point field goals.

Carey Hart: Carey Jason Phillip Hart (born July 17, 1975) is an American former professional freestyle motocross competitor, motorcycle racer and current off-road truck racer.  He is known for being the first motorcyclist to perform a back flip on a 250cc motorcycle during a competition, and for his company "Hart & Huntington Tattoo & Clothing Company".  He and singer Pink have been married since 2006.

The Hart Dynasty: The Hart Dynasty was a professional wrestling stable that appeared in World Wrestling Entertainment.  The unit consisted of the tag team of Tyson Kidd and David Hart Smith, and Natalya as a manager.  The group was named due to the connection of all three wrestlers to the Hart wrestling family; David Hart Smith is the son of Davey Boy Smith, Natalya is the daughter of Jim Neidhart, and Tyson Kidd trained under Bret Hart and at Stu Hart's Dungeon and is married to Natalya.  In 2014, Natalya began managing Kidd again.

Vision of Love: "Vision of Love" is a song by American singer and songwriter Mariah Carey.  It served as Carey's debut single, the first from her eponymous debut album.  Written by Carey and Ben Margulies, "Vision of Love" was released on May 15, 1990, by Columbia Records.  After being featured on Carey's demo tape for Columbia, the song was re-sung and produced by Rhett Lawrence and Narada Michael Walden.  "Vision of Love" features a slow-dance theme tempo and backing vocals sung by Carey herself, and introduces her usage of the whistle register.  Lyrically, the song describes a past and present relationship with a lover.  Carey describes the "vision of love" she dreamed of, as well as the present love she feels for him.

Supporting paragraphs: So What (Pink song) Carey Hart
Answer: Pink