Question: Luke Null, is an American actor, comedian, and singer, who currently works as a cast member on which NBC comedy series, premiered on September 30, 2017, and the forty-third season?

full_context: Document 1: Luke Bryan: Thomas Luther "Luke" Bryan (born July 17, 1976) is an American country singer and songwriter. He began his musical career in the mid-2000s, writing songs for his longtime friends from high school, performers Travis Tritt and Billy Currington, and releasing his first "Spring Break" album. After signing with Capitol Nashville in Nashville, Tennessee in 2007 with his cousin, Chad Christopher Boyd, he released the album "I'll Stay Me", which included the singles "All My Friends Say," "We Rode in Trucks," and "Country Man." The follow-up album "Doin' My Thing" included "Do I," which Bryan co-wrote with Charles Kelley and Dave Haywood of Lady Antebellum, and the number one singles "Rain Is a Good Thing" and "Someone Else Calling You Baby" on the country charts.
Document 2: Jon Rudnitsky: Jon Rudnitsky (born November 22, 1989) is an American actor and comedian who was a cast member on "Saturday Night Live".
Document 3: Saturday Night Live (season 41): The forty-first season of the NBC comedy series "Saturday Night Live" premiered on October 3, 2015, during the 2015–2016 television season. The season premiered on October 3, 2015 with host & musical guest Miley Cyrus and concluded on May 21, 2016 with host Fred Armisen and musical guest Courtney Barnett.
Document 4: Colin Jost: Colin Kelly Jost ( , born June 29, 1982) is an American actor, comedian, and screenwriter. He is known for his work on "Saturday Night Live", where he has served as a writer since 2005 and "Weekend Update" co-anchor since 2014. He also served as one of the show's co-head writers from 2012 to 2015.
Document 5: Saturday Night Live: Saturday Night Live (abbreviated as SNL) is an American late-night live television sketch comedy and variety show created by Lorne Michaels and developed by Dick Ebersol. The show premiered on NBC on October 11, 1975, under the original title NBC's Saturday Night. The show's comedy sketches, which parody contemporary culture and politics, are performed by a large and varying cast of repertory and newer cast members. Each episode is hosted by a celebrity guest (who usually delivers an opening monologue and performs in sketches with the cast) and features performances by a musical guest. An episode normally begins with a cold open sketch that ends with someone breaking character and proclaiming, "Live from New York, it's Saturday Night!", properly beginning the show.
Document 6: Louis C.K.: Louis C.K. ( ; born Louis Székely; September 12, 1967) is an American comedian, actor, writer, producer, director, and editor. "C.K." is a phonetic simplification of his surname. C.K. began his career writing for several comedy shows in the 1990s and early 2000s for comedians, including David Letterman, Conan O'Brien, Dana Carvey, and Chris Rock. Also in this period, he was directing surreal short films and went on to direct two features—"Tomorrow Night" (1998) and "Pootie Tang" (2001)—before he starred in the short-lived HBO television sitcom "Lucky Louie" in 2006.
Document 7: Saturday Night Live 40th Anniversary Special: The Saturday Night Live 40th Anniversary Special is a three-and-a-half-hour prime-time special that aired on Sunday, February 15, 2015, on NBC, celebrating "Saturday Night Live"' s 40th year on the air, having premiered on October 11, 1975, under the original title "NBC's Saturday Night". This special generated 23.1 million viewers, becoming NBC's most-watched prime-time, non-sports, entertainment telecast (excluding Super Bowl lead-outs) since the "Friends" series finale in 2004. It is the third such anniversary special to be broadcast, with celebratory episodes also held during the 15th and 25th seasons.
Document 8: Saturday Night Live (season 43): The forty-third season of the NBC comedy series "Saturday Night Live" premiered on September 30, 2017 with host Ryan Gosling and musical guest Jay-Z during the 2017–2018 television season. Like the final four episodes of season 42, season 43 will be broadcast live in all four time zones within the contiguous United States.
Document 9: Caleb McLaughlin: Caleb McLaughlin (born October 13, 2001) is an American actor. He began his career on the Broadway stage as Young Simba in the musical "The Lion King". Since 2016, he has portrayed Lucas Sinclair in the Netflix science fiction drama series "Stranger Things". Industry reports have confirmed that he will return in Season 2. In 2017, McLaughlin appeared in the BET miniseries "The New Edition Story" as Ricky Bell.
Document 10: 90th Academy Awards: The 90th Academy Awards ceremony, presented by the Academy of Motion Picture Arts and Sciences (AMPAS), will honor the best films of 2017 and will take place on March 4, 2018, at the Dolby Theatre in Hollywood, Los Angeles, California, at 5:30 p.m. PST. The ceremony was scheduled well after its usual late-February date to avoid conflicting with the 2018 Winter Olympics. During the ceremony, AMPAS will present Academy Awards (commonly referred to as Oscars) in 24 categories. The ceremony will be televised in the United States by ABC, and produced by Michael De Luca and Jennifer Todd. Comedian Jimmy Kimmel will host for a second consecutive year, making Kimmel the first person to host back-to-back ceremonies since Billy Crystal in 1997 and 1998 respectively.
Document 11: List of Saturday Night Live guests: "Saturday Night Live" (abbreviated as SNL) is a late-night sketch comedy and variety show created by Lorne Michaels. It premiered on NBC, a terrestrial television network, on October 11, 1975 under the title "NBC's Saturday Night". The show often satirizes contemporary American popular culture and politics. "Saturday Night Live" features a two-tiered cast: the repertory members, also known as the "Not Ready for Prime-Time Players", and newer cast members, known as "Featured Players."
Document 12: List of Saturday Night Live episodes: <section begin=head />"Saturday Night Live" ("SNL") is a late-night sketch comedy and variety show created by Lorne Michaels. It premiered on NBC, a terrestrial television network, on October 11, 1975 under the title "NBC's Saturday Night". The show often satirizes contemporary American popular culture and politics. "Saturday Night Live" features a two-tiered cast: the repertory members, also known as the "Not Ready for Prime-Time Players," and newer cast members, known as "Featured Players." Each week, the show features a host, often a well-known celebrity, who delivers an opening monologue and performs in sketches with the cast. A musical guest is also invited to perform several sets (usually two, and occasionally more). Every so often a host or musical guest will fill both roles, such as was the case with Britney Spears in 2000 and 2002, Jennifer Lopez in 2001 and 2010, Justin Timberlake in 2003, 2006 and 2013, Taylor Swift in 2009, Bruno Mars in 2012, Lady Gaga in 2013, Miley Cyrus in 2013 and 2015, Drake in 2014 and 2016, Blake Shelton in 2015, and Ariana Grande in 2016. With the exception of Season 7 and several other rare cases, the show has begun with a cold open that ends with someone breaking character and proclaiming "Live from New York, it's Saturday Night!"
Document 13: Jay Pharoah: Jared Antonio Farrow (born 14 October, 1987) better known by his stage name Jay Pharoah, is an American actor, stand-up comedian, impressionist, rapper, and voice actor. He joined the cast of NBC's "Saturday Night Live" in 2010, for its thirty-sixth season. In 2015, he was ranked the 55th greatest "Saturday Night Live" cast member by "Rolling Stone" magazine.
Document 14: Luke Null: Luke Null (born July 7, 1990 in Cincinnati, Ohio) is an American actor, comedian, and singer, who currently works as a cast member on "Saturday Night Live", having joined the show at the start of its forty-third season. Prior to joining the show, Null was known for performing at the iO Theater in Chicago specializing in musical comedy. Luke Null is now the second "SNL" cast member born in the 1990s after Pete Davidson (though Null is older than Davidson by three years).
Document 15: Saturday Night Live Weekend Update Thursday: Saturday Night Live Weekend Update Thursday is an American limited-run series broadcast on NBC. It is a political satire news show spin-off from "Saturday Night Live", featuring that show's "Weekend Update" segment. It initially ran for three 30-minute episodes in October 2008, during the lead-up to the 2008 United States presidential election.
ground_truth: Saturday Night Live