Question: Miles Bell (1946 – March 19, 2008) was a Nashville-based talent manager, his client list included Mickey Leroy Gilley (born March 9, 1936) is a country music singer and musician, of which nationality?

Context paragraphs:
Oliver Lynn: Oliver Vanetta Lynn, Jr. (August 27, 1926 – August 22, 1996), better known as Doolittle Lynn (also Doo and Mooney) was an American talent manager and country music figure, best known as the husband of country music legend Loretta Lynn.  Over the course of their often-tumultuous 48-year marriage, Doolittle was instrumental in developing Lynn's musical talent and country music career, purchasing her first guitar, getting her first radio appearances, and serving as her "de facto" talent manager for many years.

Too Good to Stop Now (album): Too Good to Stop Now is a studio album by American country music singer and songwriter Mickey Gilley (Mickey Leroy Gilley born March 9, 1936) released in 1984 by Epic Records.  The album peaked at #34 in the US country chart.  The title track, “Too Good to Stop Now”, reached #4 in the US country chart and #1 in the Canadian country chart.  Another single from the album, “I’m the One Mama Warned You About” reached #10 in the country charts of both countries.

Room Full of Roses: "Room Full of Roses", written by Tim Spencer, is a song first recorded in 1949 by country music singer George Morgan.  The original George Morgan version was released in the summer of 1949, and reached No. 4 on the "Billboard" country chart that August.  A Sons of the Pioneers version reached #10 on the country charts in the same year.  It was famously covered in 1974 by up-and-coming singer Mickey Gilley.  The Gilley version was his first major hit and broke open his career.

Miles Bell: Miles Bell (1946 – March 19, 2008) was a Nashville-based talent manager.  Over his 30-year career, Bell represented a broad range of talents, from illusionists to boy bands. His client list included Little Richard, Jeff Foxworthy, Harry Blackstone, Jr., Cledus T. Judd, Don McLean, Janis Ian, Kool & the Gang, Mickey Gilley, Sandy Hackett, The Commodores, Menudo, Tenor Gregor Praecht, The Moffatts, Mr. T and many others.

Marshall Dyllon: Marshall Dyllon was an American country music group formed in 2000, comprising vocalists Daniel Cahoon, Jesse Littleton, Michael Martin, Paul Martin, and Todd Michael Sansom.  These five members were recruited by country music artist Kenny Rogers and talent manager Lou Pearlman, in an attempt to bring the boy band sound to the country music scene.

Fool for Your Love: "Fool For Your Love" is a song written by Don Singleton, and recorded by American country music artist Mickey Gilley.  It was released in March 1983 as the first single and title track from the album "Fool for Your Love".  The song was Mickey Gilley's sixteenth number one country single as a solo artist.  The single went to number one for one week and spent a total of twelve weeks on the country chart.

Vern Yocum: Vern Yocum (April 15, 1909 - September 13, 1991) is best known as copyist and librarian for Frank Sinatra, Nat King Cole, and Nelson Riddle.  Many of the top artists of the mid-20th century relied on Vern Yocum’s Music Service, which was walking distance from the Capitol Records Tower.  His client list included: Frankie Laine, Billy Eckstine, Ella Fitzgerald, Rosemary Clooney, Mel Tormé, Peggy Lee, Steve Lawrence & Eydie Gorme, Keely Smith, Sammy Davis Jr., Trini Lopez, Nancy Wilson, Leslie Uggams, Roy Clark, and Julie Andrews.

Dorothy Sarnoff: Dorothy Sarnoff (c. 1914 – December 20, 2008) was an American operatic soprano, musical theatre actress, and self-help guru.  She had an active performing career from the late 1930s through the 1950s, during which time she sang in several operas with the New York City Opera and created several roles on Broadway, most notably Lady Thiang in the original 1951 cast of Rodgers and Hammerstein’s "The King and I".  After her performing career ended she launched a second highly successful career as an image consultant to business executives, politicians, and other public figures.  Sarnoff’s personal client list included many notable figures, including U.S. president Jimmy Carter, Israeli prime minister Menachem Begin, best-selling author Danielle Steel, and designer Paloma Picasso.  She also wrote a number of self-help books.

Mickey Gilley: Mickey Leroy Gilley (born March 9, 1936) is an American country music singer and musician.  Although he started out singing straight-up country and western material in the 1970s, he moved towards a more pop-friendly sound in the 1980s, bringing him further success on not just the country charts, but the pop charts as well.

Cybill Shepherd: Cybill Lynne Shepherd (born February 18, 1950) is an American actress, singer and former model.  Shepherd's better known roles include Jacy in "The Last Picture Show" (1971), Kelly in "The Heartbreak Kid" (1972), Betsy in "Taxi Driver" (1976), Maddie Hayes on "Moonlighting" (1985–1989), Cybill Sheridan on "Cybill" (1995–1998), Phyllis Kroll on "The L Word" (2007–2009), Madeleine Spencer on "Psych" (2008–2013), Cassie in the television film "The Client List" (2010) and Linette Montgomery on "The Client List" (2012–2013).

Supporting paragraphs: Miles Bell Mickey Gilley
Answer: American