Question: Who wrote the first song Anthony Mandler directed the music video for with Rihanna?

Context paragraphs:
National Anthem (Lana Del Rey song): "National Anthem" is a song recorded by American singer and songwriter Lana Del Rey for her second studio album, "Born to Die" (2012).  It was released as a single on July 6, 2012, through Interscope Records.  The song serves as the album's fifth single.  The music video for the song premiered on June 27, 2012.  It is directed by Anthony Mandler.  It depicts Del Rey as Marilyn Monroe and Jacqueline Kennedy and ASAP Rocky as John F. Kennedy.  It portrays the assassination of John F. Kennedy.  Critical commentary accompanied the song and video.  Positive reviews noted the song's critical evaluation of lavish lifestyles, saying it fit together with the lyrical structure of the entire album.

Anthony Mandler: Anthony Mandler (born April 18, 1973) is an American film director, music video director, television commercial director and photographer.  As a music video director, his most notable and frequent collaborator is Rihanna.  The two have worked on sixteen music videos together throughout her career, beginning with "Unfaithful" in 2006 and most recently "Diamonds" in 2012.  He has also written and directed music videos for many other prominent artists including the Spice Girls, Jay Z, Beyoncé, Eminem, Usher, Shakira, Taylor Swift, The Killers, Selena Gomez, Justin Bieber, 50 Cent, Ne-Yo, Nicki Minaj, Drake, Snoop Dogg, Lenny Kravitz, Cheryl Cole, M.I.A., Mary J. Blige, fun.  and Lana Del Rey.

The Grand Romantic: The Grand Romantic is a 28-minute short film directed by Anthony Mandler and written by Sloane Crosley.

Luti Fagbenle: Luti (Oladoke Lutiseku Mobolaji) Fagbenle is a BAFTA-nominated film producer and entrepreneur.  He is best known for producing music videos for high-profile recording artists such as One Direction, Iggy Azalea, Nicki Minaj, Kanye West, Snoop Dogg and Rita Ora and commercials and branded content for Microsoft, Nike Inc., Beats By Dre, Sony Vaio, Ferrari and Reebok.  He is also well known for his performances as Ali Taylor in popular soap opera "Hollyoaks".  Luti is a frequent collaborator with high-profile international directors such as Colin Tilley, Director X, Anthony Mandler, Kanye West, Ray Kay, Marc Klasfeld and others.

Lana Del Rey videography: American singer and occasional actress Lana Del Rey has appeared in three films as an actress, eighteen television shows, and three commercials, along with offering her talents to five films as singer.  Del Rey's first appearance was in the independent film "Poolside" (2010), which features Del Rey playing Lisa, a rich girl who spends her days smoking cigarettes by the pool.  She received top billing for the project.  Del Rey's next appearance was in a less-than-one-minute long short art film titled "Lana Del Rey" which was produced by Interview magazine and features noir-ish style and cinematic themes.  Del Rey's breakout appearance was in an Anthony Mandler directed film, which Del Rey wrote, titled "Tropico" (2013).  The film features Del Rey as a fictionalized version of Eve while also playing the Virgin Mary.  "Tropico" received positive reviews and was Del Rey's second film that gave her top billing.  Along with appearing in a handful of short films, Del Rey has appeared in 18 television shows and specials as herself along with appearing in campaign commercials for companies including Keds and H&M.

Ride (2012 film): Ride is an American short music film written by and starring Lana Del Rey.  The film was directed by Anthony Mandler and is over 10 minutes long.  It premiered onto VEVO on October 12, 2012.  The film received mixed to positive reviews, mainly due to it featuring controversial topics such as prostitution, affairs and violence.

Rihanna videography: Barbadian singer Rihanna has released four video albums and appeared in fifty-two music videos, six films, ten television programs, and eight television commercials.  In 2005, Rihanna signed a recording contract with Def Jam Recordings and released her debut single "Pon de Replay", taken from her first studio album "Music of the Sun" (2005).  Like its lyrical theme, the music video for the song was inspired by disco and dance; it was directed by Little X.  Three separate videos were released for "SOS", the lead single from her second studio album "A Girl Like Me" (2006), all of which contained various dance sequences.  The same year, American director Anthony Mandler directed the accompanying music video for the second single "Unfaithful", which featured Rihanna in a dangerous love triangle with her lover and her husband.  "Unfaithful" was Rihanna's first collaboration with Mandler; they later worked together regularly.  Also in 2006, Rihanna played herself in the third installment of the "Bring It On" film series, entitled "".

Space Age 4 Eva: Space Age 4 Eva is the fifth studio album by American hip hop duo 8Ball & MJG.  The album released on November 21, 2000, by JCOR Entertainment and Interscope Records.  The music video for the album's first single "Pimp Hard" marked the directorial debut of photographer Anthony Mandler.

Unfaithful (song): "Unfaithful" is a song by Barbadian singer Rihanna from her second studio album "A Girl like Me" (2006).  It was written by Shaffer "Ne-Yo" Smith with the song's producers StarGate.  The song was released by Def Jam Recordings on May 2, 2006, as the second single from the album.  "Unfaithful" is a pop and R&B ballad and was inspired by the works of American rock band Evanescence.  Originally titled "Murderer", the single speaks about a woman who regrets cheating on her partner.

Dreamworld (Robin Thicke song): "Dreamworld" is a song by American R&B singer Robin Thicke.  It is the fifth track from his third studio album "Something Else".  It was released as the third and final single from the album on March 4, 2009.  It did not enter the R&B/Hip-Hop Songs chart, but peaked at number 10 on Bubbling Hot R&B/Hip-Hop Songs and number 32 on Hot Adult R&B Airplay.  A music video for the song was released in 2009.  It was directed by Anthony Mandler.

Supporting paragraphs: Anthony Mandler Unfaithful (song)
Answer: Shaffer "Ne-Yo" Smith