Question: Accelerate is the fourth album by the Christian pop group Jump5, the group's cover of Sister Sledge's "We Are Family" was used as the theme for the Radio Disney Family Pledge Initiative, Sister Sledge is an American musical vocal group, from which city in Pennsylvania?

Context paragraphs:
Kathy Sledge: Kathy Sledge (born January 6, 1959) is an American singer-songwriter and producer.  Sledge is best known as a founding member and lead singer of the family vocal group Sister Sledge (made up of her sisters).  Embarking on her solo career in 1989, Sledge has had several hits on the International Pop and Hot Dance Music/Club Play chart, including "Take Me Back to Love Again", which hit #1 in 1992.  Sledge continues to tour throughout the United States and worldwide.

Hello &amp; Goodbye: Hello & Goodbye is the tenth and final studio album by the Christian pop group Jump5.  The album includes a cover of the Beatles song "Hello Goodbye" which former Jump5 member Libby Hodges performs guest vocals on, a re-recorded version of "Throw Your Hands Up," and a recording of the Star Spangled Banner.  It was in heavy rotation on Radio Disney.

Sister Sledge: Sister Sledge is an American musical vocal group from Philadelphia, Pennsylvania.  Formed in 1971, the group consisted of sisters Debbie, Joni, Kim and Kathy Sledge.  Symbolizing strong family values, the siblings achieved international success at the height of the disco era.  The year 1979 saw the release of their breakthrough album "We Are Family", which peaked at number three on the US Album Chart and went Platinum.  The album included the 1979 single "We Are Family" which reached number two on the US Billboard Hot 100 and earned them a Grammy Award nomination, together with two other 1979 top 20 international hits "He's the Greatest Dancer" and "Lost in Music".

Joni Sledge: Joan Elise "Joni" Sledge (September 13, 1956 – March 10, 2017) was an American singer–songwriter, actress and producer.  Sledge was best known as a founding member of the American family vocal group Sister Sledge, who were best known for their hits during the mid–1970s through the mid–1990s; most notably 1979's ""We Are Family"" and ""He's The Greatest Dancer"".  Sledge died from natural causes on March 10, 2017 at age 60.

Jump5 (album): Jump5 is the self-titled debut album from Christian pop group Jump5.  It was released on August 14, 2001 through Sparrow Records.  Two re-releases followed: the first featured the "Start Jumpin'" bonus track targeted towards Christian audiences, while the second featured a Radio Disney-targeted version of "Start Jumpin'" with different lyrics plus a cover of Lee Greenwood's God Bless the USA to remember the lives lost after the September 11th attacks.  A portion of sales from the second re-release was donated to families who lost a loved one during the attacks on September 11, 2001.

All American Girls: All American Girls is the fifth studio album by the American R&B vocal group Sister Sledge, released on February 2, 1981 by Cotillion Records.  Unlike their previous albums, the group served as co–producers, with Kathy Sledge and Joni Sledge serving as writers.

Accelerate (Jump5 album): Accelerate is the fourth album by the Christian pop group Jump5.  It was released on October 7, 2003.  The album demonstrated the group's shift towards a pop/rock sound, and was also the first album on which a member of the group had writing credits.  Half of the album was made up of covers, including "Walking on Sunshine" by Katrina and the Waves and "Shining Star" by Earth, Wind & Fire.  The group's cover of Sister Sledge's "We Are Family" was used as the theme for the Radio Disney Family Pledge Initiative.

The Very Best of Sister Sledge 1973–93: The Very Best of Sister Sledge 1973–93 is a greatest hits album by American vocal group Sister Sledge, released in 1993.  Featuring the biggest hit singles of Sister Sledge, the album also includes two new Sure Is Pure remixes of "We Are Family" and "Lost in Music", both released as singles in 1993 and reaching number 5 and 14 in the UK Singles Chart respectively.

The Very Best of Jump5: The Very Best of Jump5 is a greatest hits compilation album by Christian pop group Jump5.  It includes nine previous releases, including "Beauty and the Beast" which had previously only appeared on the first Disneymania album.  It also contains three new songs, including a cover of Michael W. Smith's "Friends."  A limited edition version was also released, which included the "Jump5 Video Director" computer game.  This was the last release by Jump5 while they were still signed to Sparrow Records.

All the Time in the World (Jump5 album): All the Time in the World is the second album from Christian pop group Jump5.  "All I Can Do" was released as a Radio Disney single, while the "Joyride" and "Forever In My Heart" singles were later released for both Christian contemporary hit radio (CHR) and adult contemporary radio.

Supporting paragraphs: Accelerate (Jump5 album) Sister Sledge
Answer: Philadelphia