Question: Who directed the film for which the seventh-greatest female screen legend, as named by the American Film Institute in 1999, won her first Academy Award?

Context articles: Audrey Hepburn
Cate Blanchett
Elizabeth Taylor
Greta Garbo
BUtterfield 8
AACTA Screen Content Innovation Award
Audrey Hepburn on screen and stage
AACTA Award for Best Original Screenplay
Citizen Kane
AFI Members' Choice Award

Audrey Hepburn ( ; born Audrey Kathleen Ruston; May 4, 1929January 20, 1993) was a British actress, model, dancer and humanitarian.
 Recognized as a film and fashion icon, Hepburn was active during Hollywood's Golden Age.
 She was ranked by the American Film Institute as the third-greatest female screen legend in Golden Age Hollywood and was inducted into the International Best Dressed List Hall of Fame.
Catherine Elise Blanchett, {'1': ", '2': ", '3': ", '4': "} ( ; born 14 May 1969) is an Australian actress and theatre director.
 She has received international acclaim and many accolades, including two Academy Awards, three Golden Globe Awards, three BAFTA Awards, six AACTA Awards, and three Screen Actors Guild Awards. Blanchett came to international attention for her role as Elizabeth I of England in Shekhar Kapur's 1998 film "Elizabeth", for which she won the BAFTA Award for Best Actress, the Golden Globe Award, and earned her first Academy Award for Best Actress nomination.
 Her portrayal of Katharine Hepburn in Martin Scorsese's 2004 film "The Aviator" brought her critical acclaim and many accolades, including the Academy Award for Best Actress in a Supporting Role, making her the only actor to win an Oscar for portraying another Oscar-winning actor.
 In 2013, she starred as Jasmine Francis in Woody Allen's "Blue Jasmine", for which she won numerous accolades including the Academy Award for Best Actress.
Dame Elizabeth Rosemond Taylor, DBE (February 27, 1932 – March 23, 2011) was a British-American actress, businesswoman, and humanitarian.
 She began her career as a child actress in the early 1940s, and was one of the most popular stars of classical Hollywood cinema in the 1950s.
 She continued her career successfully into the 1960s, and remained a well known public figure for the rest of her life.
 In 1999, the American Film Institute named her the seventh-greatest female screen legend.
Greta Garbo (born Greta Lovisa Gustafsson; ] ; 18 September 1905 – 15 April 1990), was a Swedish-born American film actress during the 1920s and 1930s.
 Garbo was nominated three times for the Academy Award for Best Actress and received an Academy Honorary Award in 1954 for her "luminous and unforgettable screen performances."
 In 1999, the American Film Institute ranked Garbo fifth on their list of the greatest female stars of classic Hollywood cinema, after Katharine Hepburn, Bette Davis, Audrey Hepburn, and Ingrid Bergman.
BUtterfield 8 is a 1960 drama film directed by Daniel Mann, starring Elizabeth Taylor and Laurence Harvey.
 Taylor won her first Academy Award for her performance in a leading role.
 The film was based on a 1935 novel written by John O'Hara in the wake of the success of his critically acclaimed "Appointment in Samarra".
The AACTA Screen Content Innovation Award is a special award presented by the Australian Academy of Cinema and Television Arts (AACTA) for "creativity within the screen industry" through the "successful employment of new media tools to either extend traditional formats or develop new formats, and in so doing create more rewarding and engaging audience experiences."
 The award was first presented by the Australian Film Institute (AFI) at the Australian Film Institute Awards (known commonly as the AFI Awards), before the Academy was formed in 2011.
 The award, which was first presented in 2009, and again in 2011, is handed out at the discretion of the Academy.
Audrey Hepburn (4 May 1929 – 20 January 1993) was a British actress who had an extensive career in film, television, and on the stage from 1948 to 1993.
 Considered by some to be one of the most beautiful women of all time, she was ranked as the third greatest screen legend in American cinema by the American Film Institute.
 Hepburn is also remembered as both a film and style icon.
 Her debut was as a flight stewardess in the 1948 Dutch film "Dutch in Seven Lessons".
 Hepburn then performed on the British stage as a chorus girl in the musicals "High Button Shoes" (1948), and "Sauce Tartare" (1949).
 Two years later she made her Broadway debut as the title character in the play "Gigi".
 Hepburn's Hollywood debut as a runaway princess in William Wyler's "Roman Holiday" (1953) opposite Gregory Peck made her a star.
 For her performance she received the Academy Award for Best Actress, the BAFTA Award for Best British Actress, and the Golden Globe Award for Best Actress in a Motion Picture – Drama.
 In 1954 she played a chauffeur's daughter caught in a love triangle in Billy Wilder's romantic comedy "Sabrina" opposite Humphrey Bogart and William Holden.
 In the same year Hepburn garnered the Tony Award for Best Actress in a Play for portraying the titular water nymph in the play "Ondine".
The AACTA Award for Best Original Screenplay is an award presented by the Australian Academy of Cinema and Television Arts (AACTA), for an Australian screenplay "written directly and originally for the screen".
 Prior to the establishment of the Academy in 2011, the award was presented by the Australian Film Institute (AFI) at the annual Australian Film Institute Awards (more commonly known as the AFI Awards).
 It was first handed out in 1978 when the award for Best Screenplay (which was first presented at the 1974-75 awards) was split into two categories: Best Original Screenplay and Best Adapted Screenplay.
 The award has since been presented intermittently from 1978-1979, 1983-1987, 1989, 1993-2006, and then from 2008-present.
Citizen Kane is a 1941 American mystery drama film by Orson Welles, its producer, co-screenwriter, director and star.
 The picture was Welles's first feature film.
 Nominated for Academy Awards in nine categories, it won an Academy Award for Best Writing (Original Screenplay) by Herman J. Mankiewicz and Welles.
 Considered by many critics, filmmakers, and fans to be the greatest film of all time, "Citizen Kane" was voted as such in five consecutive British Film Institute "Sight & Sound" polls of critics, until it was displaced by "Vertigo" in the 2012 poll.
 It topped the American Film Institute's 100 Years ... 100 Movies list in 1998, as well as its 2007 update.
 "Citizen Kane" is particularly praised for its cinematography, music, editing and narrative structure, which have been considered innovative and precedent-setting.
The AFI Members' Choice Award, is a film award presented by the Australian Academy of Cinema and Television Arts (AACTA) to an Australian feature-length film that is voted for by members of the Australian Film Institute (AFI).
 Prior to the establishment of the Academy in 2011, the award was presented by the Australian Film Institute (AFI) at the annual Australian Film Institute Awards (more commonly known as the AFI Awards) from 2009–2010.
 The award is presented at the AACTA Awards Luncheon, a black tie event which celebrates achievements in film production, television, documentaries and short films.