Question: What hit song, sung by Rihanna was featured on her fifth studio album "Loud" and reached number one on the US Billboard Hot 100?

<P0-S0> The discography of Danity Kane, an American R&B group, consists of two studio album, five singles, and four music videos. Danity Kane were formed in 2005 during the third season of the reality television series "Making the Band", and consisted of Aubrey O'Day, Wanita "D. Woods" Woodgett, Shannon Bex, Dawn Richard, and Aundrea Fimbres. <P0-S1>  The group disbanded in January 2009 during the fourth season of "Making the Band". <P0-S2>  The group released their self titled debut album in August 2006. <P0-S3>  The album reached number one on the United States "Billboard" 200 and was certified platinum by the Recording Industry Association of America (RIAA). <P0-S4>  Danity Kane's debut single, "Show Stopper", which featured rapper Yung Joc, reached number eight on the U.S. "Billboard" Hot 100. " <P0-S5> Ride for You", their second single, reached number 78 on the "Billboard" Hot 100. " <P0-S6> Welcome to the Dollhouse", Danity Kane's second album, was released in March 2008. <P0-S7>  It reached number one on the "Billboard" 200 and was certified gold by the RIAA. <P0-S8>  The album's lead single, "Damaged", reached number ten on the "Billboard" Hot 100 and was certified platinum by the RIAA. <P0-S9>  The group's fifth single, "Bad Girl", featured Missy Elliott and reached number 110 on the "Billboard" Hot 100. <SEP> <P1-S0> Traci Hale is an Atlanta-based American pop and R&B songwriter and vocalist. <P1-S1>  She began her career as a back up singer for R&B superstars Keith Sweat and Aaliyah before becoming a songwriter for artists including Rihanna, Blu Cantrell, Mýa and Brandy. <P1-S2> ", which reached number one on the US Billboard Hot 100. <P1-S3>  Her best-known compositions include "Case of the Ex", as recorded by Mýa, and Rihanna's "What's My Name? <SEP> <P2-S0> "What's My Name?" <P2-S1>  is a song recorded by Barbadian singer Rihanna, for her fifth studio album "Loud" (2010). <P2-S2>  Featuring guest vocals from Canadian rapper Drake, the song was released as the second single from "Loud" on October 26, 2010 through Def Jam Recordings. <P2-S3>  The electro-R&B song was produced by the Norwegian production duo StarGate, and was written by the duo along with Ester Dean, Traci Hale, and Drake. <P2-S4>  Lyrically, it incorporates themes of sexual intercourse and romance. <SEP> <P3-S0> "U Know What's Up" is a 1999 hit song by singer-songwriter-producer Donell Jones' second studio album, "Where I Wanna Be". <P3-S1>  The song features Lisa Lopes of TLC. <P3-S2>  It reached number one on the Billboard Hot R&B/Hip-Hop Singles & Tracks chart on November 13, 1999, and stayed at number one for eight consecutive weeks. <P3-S3>  It peaked at number seven on the Billboard Hot 100, remaining there for two consecutive weeks. <P3-S4>  Outside the United States, the song peaked within the top ten of the charts in the United Kingdom. <P3-S5>  The song was produced by Edward "Eddie F" Ferrell and Darren Lighty for Untouchables Entertainment. <P3-S6>  It is Jones's biggest hit to date. <P3-S7>  The song was co-written by Anthony Hamilton. <P3-S8>  The songs serves as the opening track on LaFace Records.