Question: Who's the mother of Gloria's director?

full_context: Document 1: Johnny Depp: Depp was born in Owensboro, Kentucky, the youngest of four children of Betty Sue Palmer (née Wells), a waitress, and John Christopher Depp, a civil engineer.  Depp moved frequently during his childhood. He and his siblings lived in more than 20 different places, eventually settling in Miramar, Florida in 1970. Depp's parents divorced in 1978 when he was 15. His mother married Robert Palmer, whom Depp has called "an inspiration".With the gift of a guitar from his mother when he was 12, Depp began playing in various garage bands. A year after his parents' divorce, he dropped out of Miramar High School to become a rock musician. He attempted to go back to school two weeks later, but the principal told him to follow his dream of being a musician. He played with The Kids, a band that enjoyed modest local success. The Kids set out together for Los Angeles in pursuit of a record deal, changing their name to Six Gun Method, but the group split up before signing a record deal. Depp subsequently collaborated with the band Rock City Angels and co-wrote their song "Mary", which appeared on Rock City Angels' debut Geffen Records album Young Man's Blues. On December 20, 1983, Depp married Lori Anne Allison, the sister of his band's bass player and singer. During their marriage she worked as a makeup artist while he worked a variety of odd jobs, including a telemarketer for pens. His wife introduced him to actor Nicolas Cage, who advised him to pursue an acting career. Depp and Allison divorced in 1985.
Document 2: I'm Almost Not Crazy: John Cassavetes, the Man and His Work: I'm Almost Not Crazy: John Cassavetes, the Man and His Work is a 1989 American documentary directed by Michael Ventura and starring John Cassavetes.
Document 3: Bloody Mama: Bloody Mama is a 1970 American low-budget drama film directed by Roger Corman and starring Shelley Winters in the title role. It was very loosely based on the real story of Ma Barker, who is depicted as a corrupt mother who encourages and organizes her children's criminality. The film features an early appearance by a young Robert De Niro as Lloyd Barker.
Document 4: John Cassavetes: Cassavetes was born in New York City, the son of Greek American Katherine Cassavetes (née Demetre), who was to be featured in some of his films, and Greek immigrant Nicholas John Cassavetes; in Greek, his name is Ιωάννης Νικόλαος Κασσαβέτης. His early years were spent with his family in Greece; when he returned at age seven, he spoke no English. He was reared on Long Island, New York. He attended Port Washington High School from 1945 to 1947 and participated in "Port Weekly" (the school paper), "Red Domino" (interclass play), football, and the "Port Light" (yearbook). Next to his photo on page 55 of his 1947 yearbook is written: "'Cassy' is always ready with a wisecrack, but he does have a serious side. A 'sensational' personality. Drives his 'heap' all over." Cassavetes attended Blair Academy in New Jersey and spent a semester at Champlain College before being expelled due to his failing grades. He spent a few weeks hitchhiking down to Florida and transferred to the American Academy of Dramatic Arts after running into friends who had just enrolled, stating the school was packed with girls, encouraging Cassavetes to enroll. He graduated in 1950 and met his future wife Gena Rowlands at her audition into the Academy in 1953 and they were married four months later in 1954. He continued acting in the theater, took small parts in films and began working on television in anthology series, such as "Alcoa Theatre".
Document 5: Shadows (1959 film): Shadows is a 1958 American independent drama film directed by John Cassavetes about race relations during the Beat Generation years in New York City. The film stars Ben Carruthers, Lelia Goldoni and Hugh Hurd as three African-American siblings, though only one of them is dark-skinned. The film was initially shot in 1957 and shown in 1958, but a poor reception prompted Cassavetes to rework it in 1959. Promoted as a completely improvisational film, it was intensively rehearsed in 1957, and in 1959 it was fully scripted.
Document 6: Gloria (1980 film): Gloria is a 1980 American thriller crime drama film written and directed by John Cassavetes. It tells the story of a gangster's girlfriend who goes on the run with a young boy who is being hunted by the mob for information he may or may not have. It stars Gena Rowlands, Julie Carmen, Buck Henry, and John Adames.
Document 7: Gavrik Losey: Gavrik was born in New York, the son of film director Joseph Losey and fashion designer Elizabeth Hawes. He attended the Little Red SchoolHouse in Manhattan, Poughkeepsie Day School in Poughkeepsie, and high school in New Jersey. After graduating, he travelled with his blacklisted father to England where he attended University College London.
Document 8: Faces (1968 film): Faces is a 1968 drama film, written and directed by John Cassavetes, and starring John Marley, Cassavetes' wife Gena Rowlands, Fred Draper, Seymour Cassel, and Lynn Carlin. In 2011, it was added to the National Film Registry of the Library of Congress.
Document 9: The Point Men: The Point Men is a 2001 action crime thriller film by John Glen, the director of all the James Bond films in the 1980s. He cast Maryam d'Abo, the leading Bond girl from his film "The Living Daylights" (1987), in a small role in this film.
Document 10: Ines Cassettari: Ines Cassettari (died 1943) was an Italian emigrant to America whose autobiography became famous. She was born in 1866 or 1867 in Lombardy, Italy, and abandoned at birth, and lived in an orphanage and then a foster home. She was forced to marry an abusive man. They immigrated to the United States, where she refused to run a brothel for him and eventually left him. She remarried and worked as a cleaning woman in the Chicago Commons until she died.
Document 11: David Kassan: David Kassan received his B.F.A. in 1999 from the College of Visual and Performing Arts at Syracuse University, Syracuse, NY. He continued his studies at The National Academy, and the Art Students League of New York, both in Manhattan
Document 12: Minnie and Moskowitz: Minnie and Moskowitz is a 1971 film by John Cassavetes, starring his wife, Gena Rowlands, and actor Seymour Cassel in the title roles of Minnie and Moskowitz, respectively.
Document 13: Mad Dog and Glory: Mad Dog and Glory is a 1993 American crime comedy-drama film directed by John McNaughton and starring Robert De Niro, Uma Thurman, and Bill Murray.
Document 14: Glory (1989 film): Glory is a 1989 American war film directed by Edward Zwick, starring Matthew Broderick, Denzel Washington, Cary Elwes and Morgan Freeman. The screenplay by Kevin Jarre was based on the books Lay This Laurel by Lincoln Kirstein and One Gallant Rush by Peter Burchard, and the personal letters of Colonel Robert Gould Shaw. The end credits are superimposed on photos of the monument to the 54th Massachusetts Volunteer Infantry on Boston Common.
Document 15: James De La Vega: James De La Vega was born in East Harlem, the son of Jaime De La Vega and Elsie Matos, and graduated valedictorian at York Preparatory School and attended Cornell University, where he graduated in 1994 with a Bachelor of Fine Arts. He is a former art teacher at York Preparatory School.
ground_truth: Katherine Cassavetes
sub_queries: Gloria >> director Answer: John Cassavetes
Who is the mother of John Cassavetes ? Answer: Katherine Cassavetes