American director, screenwriter, and producer Paul Thomas Anderson has directed seven feature-length films, five short films, twelve music videos, one documentary, one television episode as a guest segment director, and one theatrical play.
 He made his directorial debut with the mockumentary short film "The Dirk Diggler Story" (1988), at the age of 18, about a pornographic actor in the 1970s.
 Anderson followed it five years later with another short film, "Cigarettes & Coffee" in 1993.
 In 1996, Anderson wrote and directed the neo-noir crime thriller "Hard Eight", starring Philip Baker Hall, John C. Reilly, Gwyneth Paltrow, and Samuel L. Jackson.
 The film was well received, with film critic Roger Ebert saying of it in his review, "Movies like "Hard Eight" remind me of what original, compelling characters the movies can sometimes give us."
 Using the basis of "The Dirk Diggler Story", Anderson wrote and directed an expansion of the film entitled "Boogie Nights" in 1997.
 The film starred Mark Wahlberg as Eddie Adams/"Dirk Diggler" during the Golden Age of Porn in the 1970s and his eventual downfall in the 1980s.
 "Boogie Nights" received acclaim from critics and was a commercial success; at the 70th Academy Awards ceremony, the film was nominated for three Academy Awards, including for Best Supporting Actor (Burt Reynolds), Best Supporting Actress (Julianne Moore) and Best Original Screenplay.
The Westerner is a 1940 American film directed by William Wyler and starring Gary Cooper, Walter Brennan, and Doris Davenport.
 Written by Niven Busch, Stuart N. Lake, and Jo Swerling, the film is about a self-appointed hanging judge in Vinegaroon, Texas who befriends a saddle tramp who opposes the judge's policy against homesteaders.
 The film is often remembered for one of Walter Brennan's best performances, as Judge Roy Bean, which led to his winning his record-setting third Academy Award for Best Supporting Actor.
 James Basevi and Stuart N. Lake also received Academy Award nominations for Best Art Direction, Black and White and Best Story respectively.
The Ambassador Hotel was a hotel in Los Angeles, California, and location of the Cocoanut Grove nightclub until it was demolished in 2005.
 The hotel began operation formally on January 1, 1921, and subsequently was the site of the 2nd Academy Awards, the 3rd Academy Awards, the 5th Academy Awards, the 6th Academy Awards, the 12th Academy Awards, the 15th Academy Awards, and the June 1968 assassination of presidential candidate Robert F. Kennedy.
 The hotel closed to guests in 1989.
Walter Andrew Brennan (July 25, 1894 – September 21, 1974) was an American actor.
 He won the Academy Award for Best Supporting Actor in 1936, 1938, and 1940, making him one of only three male actors to win three Academy Awards.
Ingrid Bergman (] ; 29 August 191529 August 1982) was a Swedish actress who starred in a variety of European and American films.
 She won three Academy Awards, two Emmy Awards, four Golden Globe Awards, a BAFTA Award, and the Tony Award for Best Actress.
 She is best remembered for her roles as Ilsa Lund in "Casablanca" (1942) and as Alicia Huberman in "Notorious" (1946), an Alfred Hitchcock thriller starring Cary Grant and Claude Rains.
This is a list of winners of the Academy Award of Merit for Performance by an Actor in a Supporting Role, presented annually by the Academy of Motion Picture Arts and Sciences (AMPAS) to an actor who has delivered an outstanding performance while working within the film industry.
 More popularly known as the Academy Award (or the Oscar) for Best Supporting Actor, this award was initially presented at the 9th Academy Awards ceremony for 1936 and was most recently presented at the 88th Academy Awards ceremony for 2015.
 Throughout the past 80 years, accounting for ties and repeat winners, AMPAS has presented a total of 81 Best Supporting Actor awards to 73 different actors.
 This list is current as of the 89th Academy Awards ceremony held on February 26, 2017.
The Academy Honorary Award – instituted in 1948 for the 21st Academy Awards (previously called the Special Award, which was first presented in early 1929) – is given annually by the Board of Governors of the Academy of Motion Picture Arts and Sciences (AMPAS) to celebrate motion picture achievements that are not covered by existing Academy Awards, although prior winners of competitive Academy Awards are not excluded from receiving the Honorary Award.
 Unless otherwise specified, Honorary Award recipients receive the same gold Oscar statuettes received by winners of the competitive Academy Awards.
 Unlike the Special Achievement Award instituted in 1972 (and discontinued in 1995), those on whom the Academy confers its Honorary Award do not have to meet "the Academy's eligibility year and deadline requirements."
 Like the Special Achievement Award, the Special Award and Honorary Award have been used to reward significant achievements of the year that did not fit in existing categories, subsequently leading the Academy to establish several new categories, and to honor exceptional career achievements, contributions to the motion picture industry, and service to the Academy.
 The Academy Honorary Award is often awarded in preference to those with noted achievements in motion pictures who have nevertheless never won an Academy Award.
 Thus, many of its recipients are Classic Hollywood stars, such as Lillian Gish, Barbara Stanwyck, Kirk Douglas, and Lauren Bacall.
Martin Poll (November 24, 1922 – April 14, 2012) was an American film and television producer.
 Poll produced eleven feature films during his career, including "The Lion in Winter", for which he received a 1968 Academy Award nomination for Academy Award for Best Picture.
 The Lion in Winter, which starred Katharine Hepburn and Peter O'Toole, received nine nominations and won three Academy Awards.
 It also won a Golden Globe Award for Best Motion Picture – Drama.
Arturo Soto Rangel (March 12, 1882 – May 25, 1965) was a Mexican film, television, and stage actor.
 Rangel was best known for appearing in over 250 Mexican films.
 Rangel appeared in one American movie, "The Treasure of the Sierra Madre", which won three Academy Awards and starred Humphrey Bogart, Walter Huston, Tim Holt, Bruce Bennett, and many other successful actors.
 Rangel last appeared on television in 1963, where he starred in "Voy de gallo".
This is a list of winners of the Academy Award for Performance by an Actor in a Leading Role, presented annually by the Academy of Motion Picture Arts and Sciences (AMPAS) to an actor who has delivered an outstanding performance while working within the film industry.
 More popularly known as the Academy Award (or the Oscar) for Best Actor, this award was initially presented at the 1st Academy Awards ceremony for 1927–1928 and was most recently presented at the 88th Academy Awards ceremony for 2015.
 Throughout the past 88 years, accounting for ties and repeat winners, AMPAS has presented a total of 90 Best Actor awards to 79 actors.
 This list is current as of the 89th Academy Awards ceremony held on February 26, 2017.

Question: The Westerner starred which actor who won three Academy Awards?
Answer: Walter Andrew Brennan