question: What is the name of the person who was tied with Madonna for fifth-most number one singles in the Billboard Hot 100's chart history?
context: "Diamonds" is a song recorded by Barbadian singer Rihanna for her seventh studio album, Unapologetic (2012). It was written by Sia Furler together with its producers, Benny Blanco and StarGate. The song premiered on September 26, 2012, during the Elvis Duran and the Morning Show and was digitally released the following day as the lead single from Unapologetic. Def Jam Recordings serviced the single to contemporary hit radio in the United States on October 2. "Diamonds" is a mid-tempo pop, electronic and R&B ballad that features heavy synthesizers, orchestral sounds and electronic rhythms. The song's lyrics serve as a departure from the themes of unhealthy relationships that were on Rihanna's previous singles and contain a prominent concept of love.
  "Diamonds" topped music charts in over twenty countries, including the United States, where it became Rihanna's twelfth number one single on the Billboard Hot 100 and tied her with Madonna and The Supremes for the fifth-most number one singles in the chart's history. "Diamonds" was certified quintuple platinum by the Recording Industry Association of America (RIAA) and sold over 3.5 million digital copies in the country. By May 2013, it had sold over 7.5 million copies worldwide and became one of the best-selling singles of all-time.
  The song's music video was shot by director Anthony Mandler, a frequent collaborator of Rihanna's, and depicts her in four environments that represent the elements of earth, air, water, and fire. The video received positive reviews and was praised for its imagery. Some critics believe that the heavily tattooed man intertwined with Rihanna's arm in the video resembles Chris Brown. The singer performed "Diamonds" on television shows such as Saturday Night Live and The X Factor and included it on the 777, Diamonds, Monster Tour and the Anti World Tour set lists. The American Society of Composers, Authors and Publishers (ASCAP) recognized it as one of the most performed songs of 2013 and 2014. The official remix of "Diamonds" featured rapper Kanye West and was released on November 16, 2012. The song has been covered by various recording artists, including Josef Salvat, who released his own cover of "Diamonds" as a single.
answers.text: Rihanna