Question: Tina Campbell is the sister of the musician who got her career started in what year as part of Mary Mary?

Context paragraphs:
Incredible (Mary Mary album): Incredible is the second album by Grammy, Stellar and Dove-winning duo Mary Mary.  This album features the singles "In the Morning" and "I Try".  Mary Mary would ultimately shoot a music video for "In The Morning".  This would be Mary Mary's final album for a 3-year period as they both grew their families (each getting married and having one daughter).

Mary Mary (TV series): Mary Mary is an American reality television series that premiered on March 29, 2012, on WE tv.  The series follows the daily lives of sisters and musicians, Erica and Tina Campbell, as they balance their households and careers.  On July 27, 2017, WE tv announced that Mary Mary had been renewed for a sixth and final season set to premiere on September 28, 2017.

Get Up (Mary Mary song): "Get Up" is the lead single for Mary Mary's fourth studio album "The Sound".  The single was written and produced by both Mary Mary and producer Warryn Campbell, husband of member Erica Campbell.  The song is known as "the movement anthem".  According to the group, the song was written and produced to appeal to young generations with a mainstream sound that still captures the message of the gospel.  The group's goal was achieved when the song received moderate success in dance clubs worldwide, while holding the #1 spot on the U.S.'s Hot Dance Club Play chart.

Back to You (Mary Mary song): "Back to You" is a single by American R&B/gospel duo Mary Mary.  This is Mary Mary's first song in four years since 2012 single "Go Get It".  The song was released on July 21, 2016 for the 2016 film remake of "Ben-Hur".  The song was written and produced by Warryn Campbell.

Something Big (Mary Mary album): Something Big is the fifth studio album by R&B/Gospel duo Mary Mary and was released on March 29, 2011.  The album was primarily written by Mary Mary and produced by Warryn Campbell, Jazz Nixon, Gerald Haddon and LaMar "Mars" Edwards for Myblock Records.

God in Me: "God in Me" is the second single released for Grammy Award-winning contemporary gospel group Mary Mary's fourth studio album "The Sound", and featured Kierra Sheard.  The single was written and produced by both Mary Mary and producer Warryn Campbell, husband of member Erica Campbell.  The single is the group's first to chart on the "Billboard" Hot 100 since their debut single, "Shackles", charted in 2000.  The song won Song of the Year at the 25th Annual Stellar Awards.

I Luh God: "I Luh God" is a song by American gospel singer Erica Campbell of Mary Mary.  The song also features American gospel rapper LaShawn Daniels, who produced the song, also known as Big Shizz, who is uncredited.  It is her second single from her album Help 2.0.  The song is considered to be an example of an uprising music genre called "Trap Gospel", as it has a drum machine, bass, and a rap tone in Campbell's voice.  The song has caused controversy, with many people claiming the song`s sound too secular.  YouTuber KevOnStage has uploaded a response video addressing the song.  In the course of the song, Campbell seems to call out the very voices and messages that are traditionally associated with the beat.  “You ain’t got the money moving by yourself/And you know you did it with a lot of help/You know it’s only one, it ain’t nobody else ”The lines immediately recall Drake‘s “All Me,” featuring Big Sean and 2 Chainz, which boasts “Came up, that’s all me/Stayed true, that’s all me/No help that’s all me, all me for real.”  The Yolonda Adams Morning Show wrote on their website.

Erica Campbell (musician): Erica Monique Campbell ("née", Atkins; born April 29, 1972) is an American urban contemporary gospel, Christian R&B and contemporary R&B recording artist, musician and radio host.  She started her music career in 1998 with her younger sister, Tina Campbell, as part of the gospel music group, Mary Mary.  Her solo music career began in 2013, and has since released two albums with Entertainment One Music, which both charted on the "Billboard" magazine charts.  She won a Grammy Award for Best Gospel Album at the 57th edition of the event.  Since May 2016, she serves as the host of "Get Up!  Mornings with Erica Campbell" with comedian Griff, that currently airs on Urban Gospel, which owned by Radio One.

Tina Campbell (musician): Trecina Evette "Tina" Campbell ("née", Atkins; born May 1, 1974) is an American urban contemporary gospel, Christian R&B and contemporary R&B recording artist and musician.  She started her music career in 1998 with her older sister, Erica Campbell, as part of the gospel music group, Mary Mary.  Her solo music career began in 2014, and has since released one studio album with Gee Tree Creative, where it charted on the "Billboard" magazine chart.

Help (Erica Campbell album): Help is the debut studio album by Mary Mary recording artist Erica Campbell and was released on March 25, 2014 by eOne.  This is Erica Campbell's debut studio album without her sister Tina Campbell.  The album's release was preceded by the singles "A Little More Jesus", the title track "Help" and "You Are".  The album debuted at number 1 on the US "Billboard" Gospel Albums chart and number 6 on the "Billboard" 200 with first-week sales of 23,000 copies.  The album also won the Grammy Award for Best Gospel Album at the 57th Grammy Awards.

Supporting paragraphs: Tina Campbell (musician) Erica Campbell (musician)
Answer: 1998