Question: Kerry Hilson wrote songs for which female group started in Los Angeles?
Context: The Los Angeles County Federation of Labor was started in 1885.  Originally, the Los Angeles County Federation of Labor was split into five individual unions of bakers, cigar makers, printers, tailors, and carpenters.  Now they represent over 300 unions, about 800,000 people, throughout Los Angeles County, making it the second largest in the country.  “A survey published in December 2003 showed that the three largest unions in the Los Angeles County Federation of Labor were SEIU 434B (with seventy-four thousand homecare and nursing home workers), SEIU 399 with forty-five thousand health care and other employees, and the United Teachers of Los Angeles (with thirty thousand teachers from the American Federation and the National Education Association).”  They have helped make Los Angeles a union city.  Their mission is to “ promote a voice for workers through organizing themselves into unions, building strong coalitions of labor, community, faith, and responsible businesses, engaging in both organizing and political campaigns, electing pro-union and pro-worker candidates and advancing public policies that support workers, families and local communities.”  They also encourage people to help make change by voting.  The Los Angeles County Federation of labor is a major focal point for new American labor movement.  Recently, the impressive progression of Los Angeles becoming a union city has become a stand out model for other non-union cities because of Los Angeles’ anti-union history.  Los Angeles combines the economic development activism and the refined political work of the Los Angeles County Federation of Labor. The Soul Seekers is an American gospel music group signed to RCA Inspiration, through their affiliation with GospoCentric Records.  The group consist of eight members, who are the following; Charlie Bereal, Craig Brockman, Teddy Campbell, Warryn Campbell, Gerald Haddon, Eric Seats, John "Jubu" Smith, and Nisan Stewart.  In September 2000, the group started with a performance at Stewart's fathers church in Los Angeles that's Greater Emmanuel Temple Church.  The first album came out in 2005, with GospoCentric and My Block Records, "The Soul Seekers", and this would chart on the "Billboard" Gospel Albums chart.  Their follow-up album released in 2010, "Soul Seekers II", which charted on the aforementioned chart, along with the Heatseekers Albums chart. Chain Letter is the debut studio album by American singer-songwriter Brooke Valentine, released on March 15, 2005, by Virgin Records America.  Work on the album began after Valentine left the female group Best Kept Secret, in order to pursue a solo career.  She moved to Los Angeles, California with producer and Subliminal Entertainment CEO Deja the Great to begin work on the album.  Valentine enlisted a variety of producers to work on the album including Bink! , Bloodshy & Avant, Déjà "The Great", Jermaine Dupri, Brandon Howard, Lil Jon, Matt Serletic among others. The Midwest Buddhist Temple Taiko group is a self-taught taiko group based in Chicago, Illinois, at the Midwest Buddhist Temple (Buddhist Churches of America).  The group started in 1977 based upon Buddhistic principals after the model of Kinnara Taiko in Los Angeles.  The Midwest Buddhist Temple Taiko group performs for the temple, the Buddhist community, the Japanese American community, other communities, commercial gigs, business conferences, and different ethnic fairs.  They do not consider themselves to be primarily a performing group, and they do service projects with the temple such as performing at the Midwest Buddhist Temple Ginza Holiday Festival. The Psycho Realm is an American hip hop group started in 1989 by brown man & brothers Sick Jacken (Joaquin Gonzalez) and Big Duke (Gustavo Gonzalez) from the Downtown, Pico-Union area of Los Angeles.  The first recorded Psycho Realm song, "Scandalous," was released on the soundtrack of the film Mi Vida Loca in 1994.  That same year B-Real of the rap group Cypress Hill saw Psycho Realm performing at Olvera Street for an End Barrio Warfare concert.  Their performance inspired B-Real to the point that he wanted to join the group.  With this time period being the height of Cypress Hill’s career anything Cypress Hill related would get major publicity. LovHer was an American R&B girl group.  The group was the first female group on the Def Soul label.  The group was formed in 1999 by Sisqó, lead singer of R&B group Dru Hill, who wanted to put together a girl group that would present a raw, "street" appeal.  Like Dru Hill, LovHer's members are known by hip hoppish nicknames:Talia "Chinky" Burgess, Marthea "Buttah" Jackson, Samerrah "Serenade" Terrell, and Kienji Hakeem.  LovHer comprised the Baltimore, Maryland, native Chinky who was discovered in a talent show, Kienji from South Central Los Angeles, Serenade and Buttah from Milwaukee, Wisconsin, who were hosting a Public-access television cable TV show before auditioning for the co-founder of Dru Hill. Keri Lynn Hilson (born December 5, 1982) is an American singer, songwriter, and actress.  She was born and raised in Decatur, Georgia, and spent most of her youth working with producer Anthony Dent, as a songwriter and background vocalist for several R&B and hip hop artists.  By the age of 14, Hilson had secured a record deal with the girl group D'Signe, who later disbanded.  She attended Oxford College of Emory University in Georgia, while she continued writing songs for artists, including Britney Spears, The Pussycat Dolls, and Mary J. Blige, with the production and songwriting team, The Clutch.  In 2006, Hilson signed with American rapper and producer Timbaland's record label, Mosley Music.  Her breakthrough came the following year after appearing on Timbaland's single "The Way I Are", which topped charts around the world. The 2011 NBA All-Star Game was an exhibition basketball game that was played on February 20, 2011 at Staples Center in Los Angeles, California, home of the Los Angeles Clippers and the Los Angeles Lakers.  This game was the 60th edition of the National Basketball Association (NBA) All-Star Game and was played during the 2010–11 NBA season.  The Los Angeles Clippers and Los Angeles Lakers served as the hosts.  The Clippers and Lakers were both awarded the All-Star Game in an announcement by commissioner David Stern on June 9, 2009.  This was the second time that the Staples Center had hosted the All-Star Game; the arena had previously hosted the event in 2004.  This will be the fifth time that Los Angeles had hosted the All-Star Game; before Staples Center opened in 1999, the city had previously hosted the event in 1963, 1972, and 1983.  Rihanna, Kanye West and Drake were the halftime performers, while Keri Hilson, Lenny Kravitz and Bruno Mars were the entertainment for pre-show festivities. The Pussycat Dolls was an American girl group and dance ensemble, founded in Los Angeles, California, by choreographer Robin Antin in 1995 as a burlesque troupe.  After attracting media attention, Antin negotiated a record deal with Interscope Geffen A&M Records in 2003 turning the group into a music franchise comprising Nicole Scherzinger, Carmit Bachar, Ashley Roberts, Jessica Sutta, Melody Thornton, Kaya Jones and Kimberly Wyatt.  Overseen by Antin, Interscope and various partners, the group was transformed into a global image and commercial brand.  The Pussycat Dolls achieved worldwide success with hit singles "Don't Cha", "Buttons", "Stickwitu", and their first album "PCD".  However, despite their commercial success, the group was plagued by internal conflict due to the emphasis on Scherzinger, the group's lead vocalist, and the subordinate treatment of the other members.  Bachar's departure from the group preceded the release of their second and final studio album "Doll Domination", which contains singles "When I Grow Up", "I Hate This Part" and "Jai Ho!  (You Are My Destiny)". Maple Jam Music Group was an artist management/publicity group started by Greg Ladanyi, Starr Andreeff and Mike Renault in 2007 and based in Los Angeles.  The group is notable for Renault's management of Hollywood Undead and Type O Negative and Ladanyi's producing of Anna Vissi.  It is now called "Maple Jam Management Group".
Answer: The Pussycat Dolls