Question: Which film director produced low-budget films, George Sherman or Nick Cassavetes?

Context paragraphs:
Yellow (2012 film): Yellow is a 2012 American drama film directed by Nick Cassavetes and written by Nick Cassavetes and Heather Wahlquist.  The film stars Riley Keough, Sienna Miller, David Morse, Ray Liotta, Melanie Griffith and Lucy Punch.  The film was awarded "Best Film" at the Catalina Film Festival on September 22, 2013.

Wild Horse Rodeo: Wild Horse Rodeo is a 1937 American Western film directed by George Sherman and starring Robert Livingston, Ray Corrigan, and Max Terhune.  Written by Oliver Drake and Betty Burbridge, based on a story by Drake and Gilbert Wright, the film is about a champion rodeo rider who returns to his home town in search of a legendary wild horse called Cyclone.  The film is part of the "Three Mesquiteers" series of B-movies produced by Republic Pictures.  "Wild Horse Rodeo" was the first film directed by George Sherman, who later directed numerous Western films for Republic, Columbia Pictures, and Universal Pictures.

George Sherman: George Sherman (July 14, 1908 – March 15, 1991) was an American film director and producer of low-budget Western films.

Nick Cassavetes: Nicholas David Rowland Cassavetes (born May 21, 1959) is an American filmmaker and actor.

She's So Lovely: She's So Lovely is a 1997 film directed by Nick Cassavetes, written by John Cassavetes.  At the time of its release, it received special attention because, eight years after his death, it was the first (and still only) posthumous film to feature previously unreleased material from John Cassavetes.

Northern Comfort: Northern Comfort is a 2010 American improvisational film starring Rod Webber and Greta Gerwig.  Shot primarily in three days for a paltry three thousand dollars, the film is the second of Webber's films based on a manifesto which has been likened to DIY Dogme films which use limited equipment and other resources in an attempt to create an atmosphere of realism not present in most traditional schools of film-making. " The Boston Globe"’s Ty Burr called it "DIY Dogme dedicated to Webber’s guiding maxim: 'The movie already exists, it’s just waiting to be found.’"  During an interview for Gerwig's Greenberg starring Ben Stiller (Gerwig's first mainstream movie) she was asked whether she'd be doing more films for $3000 and replied, "[Laughs] Maybe not $3,000 budgets but maybe $50,000 budgets.  I'm interested in making low-budget films not for the sake of making low-budget films but because a lot of filmmakers that I want to work with and that I like are working on a smaller scale."

Alexandra Cassavetes: Alexandra "Xan" Cassavetes (born September 21, 1965) is an American actress and director.  She is the daughter of Greek-American actor-director John Cassavetes and actress Gena Rowlands.  She is the granddaughter of actress Katherine Cassavetes.  She is the sister of actor-director Nick Cassavetes and actor-screenwriter-director Zoe Cassavetes.

Low-budget film: A low-budget film or low-budget movie is a motion picture shot with little to no funding from a major film studio or private investor.  Many independent films are made on low budgets, but films made on the mainstream circuit with inexperienced or unknown filmmakers can also have low budgets.  Many young or first time filmmakers shoot low-budget films to prove their talent before doing bigger productions.  Many low-budget films that do not gain some form of attention or acclaim are never released in theatres and are often sent straight to retail because of its lack of marketability, look, story, or premise.  There is no precise number to define a low budget production, and it is relative to both genre and country.  What might be a low-budget film in one country may be a big budget in another.  Modern-day young filmmakers rely on film festivals for pre promotion.  They use this to gain acclaim and attention for their films, which often leads to a limited release in theatres.  Film that acquire a cult following may be given a wide release.  Low-budget films can be either professional productions or amateur.  They are either shot using professional or consumer equipment.

Alfonso Brescia: Alfonso Brescia (6 January 1930 – 6 June 2001) was an Italian film director of low-budget films, sometimes credited as Al Bradley or Al Bradly.  Film buffs mainly know him for the four low-budget sci-fi films he hurriedly directed in 1978 to capitalize on the success of "Star Wars"...Cosmos War of the Planets", "Battle in Interstellar Space", "War of the Robots and Star Odyssey.  (His movie The Beast in Space (1980) was an adult sci-fi film, and was not part of his 1978 space series).  Horror film fans know him for his 1972 giallo Naked Girl Killed in the Park.

Katherine Cassavetes: Katherine Cassavetes (née Demetre; June 24, 1906 – March 29, 1983) was a Greek American actress.  She was the mother of actor-director John Cassavetes and mother-in-law of actress Gena Rowlands.  Her grandchildren are actor-directors Nick Cassavetes, Zoe Cassavetes, and Alexandra Cassavetes.  She appeared in four films, three of which were written and directed by her son, including "Minnie and Moskowitz" (1971).

Supporting paragraphs: George Sherman Nick Cassavetes
Answer: George Sherman