Question: Both Rex Salas and Robin Thicke are of what nationality?

Context paragraphs:
Alan Thicke: Alan Willis Thicke (born Alan Willis Jeffrey; March 1, 1947 – December 13, 2016) was a Canadian actor, songwriter, game and talk show host.  He was best known for his role as Jason Seaver, the father on the ABC television series "Growing Pains", which ran for seven seasons.  He is the father of actor Brennan Thicke, and of singer Robin Thicke.  In 2013, Thicke was inducted into Canada's Walk of Fame.  Thicke died on December 13, 2016 in the Providence Saint Joseph Medical Center in Burbank, California, U.S.

Lost Without U: "Lost Without U" is a song by American recording artist Robin Thicke.  It was released in January 2007 as the second single from his second album, "The Evolution of Robin Thicke" (2006). " People" magazine voted the ballad as 2007 sexiest song of the year.  It was also named the 10th best song of 2007 by "Vibe" magazine.

Something Else (Robin Thicke album): Something Else is the third studio album by R&B singer Robin Thicke, released on September 30, 2008.  It is a follow up to Thicke's highly successful second album "The Evolution of Robin Thicke" and features a guest appearance by Lil Wayne.

Robin Thicke discography: American-Canadian singer Robin Thicke has released seven studio albums, twenty-six singles and twenty music videos.  Thicke signed his first recording contract with Interscope Records as a teenager and found success as a songwriter, before he began concentrating on his career as a performer.  In 2000, Thicke started recording his debut album, "A Beautiful World", which was released in April 2003.  The album debuted at number 152 on the US "Billboard" 200, selling 119,000 copies.  The record also peaked at number 36 on the Mega Album Top 100 in the Netherlands.  Two singles were released from the album; the first, "When I Get You Alone" became a top ten hit in the Netherlands and New Zealand.  That single also peaked at number 17 in Australia and was certified gold by the Australian Recording Industry Association (ARIA).  In 2006, Thicke released his second studio album "The Evolution of Robin Thicke".  The record debuted at number 5 on the US "Billboard" 200, topped it on the "Billboard"'s Top R&B/Hip-Hop Albums, and became a certified platinum by the Recording Industry Association of America (RIAA).  The album also charted in France, the Netherlands, and the United Kingdom.  "The Evolution of Robin Thicke" produced four singles, all of which charted on the "Billboard"'s Hot R&B/Hip-Hop Songs. " Lost Without U" became one of his biggest hits, peaking at number 14 on the US "Billboard" Hot 100 and spending 11 weeks atop the "Billboard"'s Hot R&B/Hip-Hop Songs.

Got 2 Be Down: "Got 2 Be Down" is the fourth and final single from Robin Thicke's second studio album "The Evolution of Robin Thicke".  It was officially released to radio stations on October 2, 2007.  Originally "Got 2 Be Down" was expected to be the 3rd single but due to Faith Evans' pregnancy plans the release for the single were put on hold.  In late 2007 "Got 2 Be Down" was getting very little airplay.

Robin Thicke: Robin Charles Thicke (born March 10, 1977) is an American singer, songwriter and record producer.

Beautiful Life (Guy Sebastian album): Beautiful Life is the second album by Guy Sebastian.  It was released 18 October 2004 on Sony BMG Australia.  It was followed by his "The Beautiful Life" Australian concert tour.  During the 8-month course of production, Sebastian travelled to the United States and Europe to work with some of the world's best songwriters, including his own idol Brian McKnight with whom he penned the song "Wait", as well as Robin Thicke whom he co-wrote the #1 charting first single "Out with My Baby" and "Fiend for You".  "How", a Robin Thicke original, is also included.  The album reached Platinum status in Australia and eventually sold in excess of 100,000 copies.

Can U Believe: "Can U Believe" is the third single from Robin Thicke's second studio album "The Evolution of Robin Thicke".  It was released to Urban AC radio on April 12, 2007.  Originally "Got 2 Be Down" was expected to be the 3rd single but due to Faith Evans' pregnancy the plans for the release of the single were scrapped even though the song had already begun receiving airplay.  "Got 2 Be Down" was later released as the album's fourth single.

Shooter (song): "Shooter" is the third single from Lil Wayne's fifth studio album "Tha Carter II" being also the second single on Robin Thicke's second studio album "The Evolution of Robin Thicke".  The song was also featured on the "Like Father, Like Son" bonus disc.  The song samples the electric piano from Vic Juris’ "Horizon Drive,".  It is a remake of Robin Thicke's "Oh Shooter", from his first album "A Beautiful World", which was inspired by Thicke's real-life experience of being caught in a bank robbery when he was 18.

Rex Salas: Rex Salas (born March 16, 1962) is an American record producer, songwriter, musical director, and music arranger.  Best known in recent years for his work as the musical director for Janet Jackson on several of her tours, Salas has worked with Vanessa Williams, Justin Timberlake, Cher, Boyz II Men, Robert Palmer, Mariah Carey, Stevie Wonder, Lionel Richie, JC Chasez, Earth, Wind and Fire, will.i.am, Robin Thicke, 50 Cent, Jessica Simpson, Nicole Scherzinger, Taylor Dayne, Lindsay Lohan, Adam Levine, Brandy, Maxwell, Leona Lewis, Brian McKnight, Teddy Pendergrass, The Isley Brothers, The Jacksons, UB40, Jeffrey Osborne, All-4-One, Johnny Gill, George Howard, Gladys Knight, The Gap Band, Lalah Hathaway, Jasmine Guy, Tatyana Ali, James Ingram, Corbin Bleu, Patti Austin, Lakeside, The Mac Band, Klymaxx, Chuckii Booker, The Dazz Band, Chanté Moore, Patrice Rushen, Tease, Atlantic Starr, Lenny Williams, Barbara Weathers, Miki Howard, Rebbie Jackson, Aly & AJ, Joyce Kennedy (Mother’s Finest), Paul Jackson, Jr., Brian Simpson, Vesta Williams, Level 42, Sheena Easton and more.

Supporting paragraphs: Rex Salas Robin Thicke
Answer: American