Question: What actress and singer starred in the show that Kanter was creator and executive producer for?

full_context: Document 1: A Different World: A Different World is an American sitcom (and a spin-off of "The Cosby Show") that aired for six seasons on NBC from September 24, 1987 to July 9, 1993. The series originally centered on Denise Huxtable (Lisa Bonet) and the life of students at Hillman College, a fictional historically black college in Virginia. It was inspired by student life at Hampton University, Spelman College, and Howard University. And other HBCUs After Bonet's departure in the first season, the remainder of the series primarily focused more on Southern belle Whitley Gilbert (Jasmine Guy) and math whiz Dwayne Wayne (Kadeem Hardison).
Document 2: The Diahann Carroll Show: The Diahann Carroll Show is a series of four musical variety television specials, starring Diahann Carroll, that aired on CBS in 1976. The show was a summer replacement for "The Carol Burnett Show".
Document 3: Hal Kanter: Hal Kanter (December 18, 1918; Savannah, Georgia – November 6, 2011; Encino, California) was a writer, producer and director, principally for comedy actors such as Bob Hope, Jerry Lewis, and Elvis Presley (in "Loving You" and "Blue Hawaii"), for both feature films and television. Kanter helped Tennessee Williams turn the play by Williams into the film version of "The Rose Tattoo". Since 1991, he was regularly credited as a writer for the Academy Award broadcasts. Kanter was also the creator and executive producer of the television series "Julia".
Document 4: Diahann Carroll: Diahann Carroll ( ) (born Carol Diahann Johnson, July 17, 1935) is an American television and stage actress and singer known for her performances in some of the earliest major studio films to feature black casts, including "Carmen Jones" (1954) and "Porgy and Bess" (1959) as well as on Broadway. "Julia" (1968) was one of the first series on American television to star a black woman in a nonstereotypical role and was followed by her portrayal of Dominique Deveraux in the primetime soap opera "Dynasty" over three seasons. She is the recipient of numerous stage and screen nominations and awards, including the Golden Globe Award for "Best Actress In A Television Series" in 1968. A breast cancer survivor and activist, Carroll was scheduled to return to the Broadway stage in the 2014 revival of "A Raisin in the Sun" as Mama, but withdrew prior to opening citing the demands of the rehearsal and performance schedule.
Document 5: Marty Katz: Marty Katz has been involved in the motion picture and television industries for over three decades and has served in a variety of producing and executive positions in charge of production. In October 1992, following an eight year association with The Walt Disney Studios that included the position as Executive Vice President, Motion Pictures and Television Production, he formed his own independent production banner, Marty Katz Productions, which was based at Disney and had an exclusive overall arrangement with the studio. Under his banner, Mr. Katz produced the comedy hits “Man Of The House” starring Chevy Chase and Jonathan Taylor Thomas, and “Mr. Wrong” starring Ellen DeGeneres and Bill Pullman. Concurrently with this exclusive production agreement with Disney, he continued to serve the studio as a Production Consultant in connection with various film and television projects and new technology issues.
Document 6: African-American representation in Hollywood: The presence of African Americans in major motion picture roles has stirred controversy since Hattie McDaniel played Mammy, the house servant, in "Gone with the Wind". "Through most of the 20th century, images of African-Americans in advertising were mainly limited to servants like the pancake-mammy Aunt Jemima and Rastus, the chef on the Cream of Wheat box." The roles the African-American community were generally offered usually fell into three themes; a tale of rags to riches, thug life, or segregation. "Many researchers argue that media portrayals of minorities tend to reflect whites' attitudes toward minorities and, therefore, reveal more about whites themselves than about the varied and lived experiences of minorities", and though these are one group's (white peoples) opinions it still seems to dominate mainstream media.
Document 7: Elia Kazan: Elia Kazan (born Elias Kazantzoglou September 7, 1909 – September 28, 2003) was a Greek-American director, producer, writer and actor, described by "The New York Times" as "one of the most honored and influential directors in Broadway and Hollywood history".
Document 8: Harry Winkler (writer): Harry Winkler was an American sitcom writer who wrote for such shows as "The Addams Family", "The George Gobel Show", and others. He shared an Emmy award in 1955 for "The George Gobel Show" and was nominated the following year for the same show. In that same year, 1956, one of his television scripts was featured in "The Prize Plays of Television and Radio 1956" published by Random House. Mr. Winkler also wrote the ground breaking series "Julia" starring Dianne Carroll, the first commercial television series to star an African-American female in the lead role of a single, professional woman with a family to support. He also wrote the original treatment "The Flagstones" for what ultimately became known as "The Flintstones". Additional credits include having been the ghost writer for the internationally featured Blondie comic strip series for over 25 years, 1955 through 1980. He also wrote for a wide variety of other comedy series ranging from Petticoat Junction, to the Brady Bunch, to the Odd Couple. In 2014 he received a posthumous award from the Writers Guild of America for his work on the Odd Couple television series, that script having been designated one of the top 100 television screenplays during the first 75 years of commercial television. He is also the author of three novels and a theatrical play, "Edges".
Document 9: Howard Harris (writer): Howard Harris (February 15, 1912, New York City – March 22, 1986) was a comedy writer whose credits included "Copacabana" (1947) starring Groucho Marx and Carmen Miranda (), "The Jackie Gleason Show", "You Bet Your Life" with Groucho Marx, "Gilligan's Island", "Petticoat Junction", and other popular television shows.
Document 10: Marlo Thomas: Margaret Julia "Marlo" Thomas (born November 21, 1937) is an American actress, producer, and social activist known for starring on the sitcom "That Girl" (1966–1971) and her award-winning feminist children's franchise, "Free to Be... You and Me".
Document 11: Julia Benjamin: Julia Benjamin (born February 21, 1957) is a retired American film and television actress of the 1960s, 1970s and 1980s. She is best remembered for her character role as Susie Baxter, the daughter of Steve and Barbara Baxter and the first cousin of Harold "Sport" Baxter on the 1960s sitcom "Hazel." Benjamin was also well known for her roles in the movies "Mr. and Mrs. Bo Jo Jones" and "The Jordan Chance." Benjamin's career began at the age of eight on "Hazel" in 1965. "Hazel" was a sitcom that first aired in 1961 on NBC. The series centered on the Baxter family. The family included husband George Baxter, (Don DeFore), his wife Dorothy Baxter, (Whitney Blake) and their only child, son Harold "Sport" Baxter, (Bobby Buntrock). At the end of the 1964-65 television season, NBC canceled the series. CBS decided to pick it up for a fifth season. CBS cast Ray Fulmer, Lynn Borden, and Benjamin as George Baxter's brother Steve, his wife Barbara and their daughter Susie. The premise of the fifth season was that George and Dorothy had to move to the Middle East as part of a job promotion. So, Hazel and Harold moved in with Steve, Barbara, and Susie. The series was cancelled by CBS airing its last episode on April 11, 1966. It was never picked up again. After Hazel, Benjamin would only get roles in a limited few number of movies and guest starring roles on television. After Hazel went off the air, Benjamin would have only five roles in movies and television. Her television credits include three guest starring roles on the television shows "My Three Sons," "The Rockford Files" and "Riptide." Her movie credits include two TV movies; "Mr. and Mrs. Bo Jo Jones" (1971), and "The Jordan Chance" (1978). "Riptide" was Benjamin's last acting appearance. She has not acted in anything since.
Document 12: Steven Cantor: Steven Cantor is an American film/television director and film/television producer. Seven of his films have been nominated for Emmy Awards, with one winning, and he was nominated for an Academy Award for his first film. Notable works include the films "Tent City, USA", "Unraveled", "No One Dies in Lily Dale", "Reporter with Nicholas Kristof", "I Am an Animal", "", "loudQUIETloud: A Film about Pixies", "American Masters: Willie Nelson", "Devil's Playground", "", and "Dancer."
Document 13: Julia (TV series): Julia was an American sitcom notable for being one of the first weekly series to depict an African American woman in a non-stereotypical role. Previous television series featured African American lead characters, but the characters were usually servants. The show starred actress and singer Diahann Carroll, and ran for 86 episodes on NBC from September 17, 1968 to March 23, 1971. The series was produced by Savannah Productions, Inc., Hanncarr Productions, Inc., and 20th Century-Fox Television.
Document 14: The Rose Tattoo (film): The Rose Tattoo is a 1955 film adaptation of the Tennessee Williams play of the same name. It was adapted by Williams and Hal Kanter and directed by Daniel Mann, with stars Anna Magnani, Burt Lancaster, Marisa Pavan and Jo Van Fleet. Williams originally wrote the play for Italian Anna Magnani to play on Broadway in 1951, but she rejected the offer because of her difficulty with the English language at the time. By the time of this film adaptation, she was ready.
Document 15: Jerry Lewis: Jerry Lewis (born either Jerome Levitch or Joseph Levitch, depending on the source; March 16, 1926 – August 20, 2017) was an American comedian, actor, singer, producer, director, screenwriter, and humanitarian.
ground_truth: Diahann Carroll