Question: When was the American singer on which 47th Academy Awards was presided born? 

Context paragraphs:
List of Best Supporting Actress winners by age: This is a list of winners of the Academy Award for Performance by an Actress in a Supporting Role, presented annually by the Academy of Motion Picture Arts and Sciences (AMPAS) to an actress 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 Actress, 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 Actress awards to 79 different actresses.  This list is current as of the 89th Academy Awards ceremony held on February 26, 2017.

List of Best Supporting Actor winners by age: 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.

76th Academy Awards: The 76th Academy Awards ceremony, presented by the Academy of Motion Picture Arts and Sciences (AMPAS), honored the best films of 2003 and took place on February 29, 2004, at the Kodak Theatre in Hollywood, Los Angeles beginning at 5:30 p.m. PST / 8:30 p.m. EST.  During the ceremony, AMPAS presented Academy Awards (commonly referred to as Oscars) in 24 categories.  The ceremony, televised in the United States by ABC, was produced by Joe Roth and was directed by Louis J. Horvitz.  Actor Billy Crystal hosted for the eighth time.  He first presided over the 62nd ceremony held in 1990 and had last hosted the 72nd ceremony held in 2000.  Two weeks earlier in a ceremony at The Ritz-Carlton Huntington Hotel & Spa in Pasadena, California held on February 14, the Academy Awards for Technical Achievement were presented by host Jennifer Garner.

Ambassador Hotel (Los Angeles): 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.

47th Academy Awards: The 47th Academy Awards were presented April 8, 1975, at the Dorothy Chandler Pavilion, Los Angeles.  The ceremonies were presided over by Bob Hope, Shirley MacLaine, Sammy Davis Jr. and Frank Sinatra.  This was the last year NBC aired the ceremonies before ABC secured broadcasting rights, which they still hold to this day.

69th Academy Awards: The 69th Academy Awards ceremony, organized by the Academy of Motion Picture Arts and Sciences (AMPAS) took place on March 24, 1997, at the Shrine Auditorium in Los Angeles beginning at 6:00 p.m. PST / 9:00 p.m. EST.  During the ceremony, AMPAS presented the Academy Awards (commonly referred to as Oscars) in 24 categories honoring films released in 1996.  The ceremony, televised in the United States by ABC, was produced by Gil Cates, and directed by Louis J. Horvitz.  Actor Billy Crystal hosted the show for the fifth time.  He first presided over the 62nd ceremony held in 1990 and had last hosted the 65th ceremony held in 1993.  Three weeks earlier, in a ceremony held at the Regent Beverly Wilshire Hotel in Beverly Hills, California, on March 1, the Academy Awards for Technical Achievement were presented by host Helen Hunt.

68th Academy Awards: The 68th Academy Awards ceremony, organized by the Academy of Motion Picture Arts and Sciences (AMPAS), honored the best films of 1995 in the United States and took place on March 25, 1996, at the Dorothy Chandler Pavilion in Los Angeles beginning at 6:00 p.m. PST / 9:00 p.m. EST.  During the ceremony, AMPAS presented Academy Awards (commonly referred to as Oscars) in 24 categories.  The ceremony, televised in the United States by ABC, was produced by Quincy Jones and directed by Jeff Margolis.  Actress Whoopi Goldberg hosted the show for the second time, having previously presided over the 66th ceremony in 1994.  Three weeks earlier, in a ceremony held at the Regent Beverly Wilshire Hotel in Beverly Hills, California, on March 2, the Academy Awards for Technical Achievement were presented by host Richard Dreyfuss.

75th Academy Awards: The 75th Academy Awards ceremony, presented by the Academy of Motion Picture Arts and Sciences (AMPAS) took place on March 23, 2003, at the Kodak Theatre in Hollywood, Los Angeles beginning at 5:30 p.m. PST / 8:30 p.m. EST.  During the ceremony, AMPAS presented Academy Awards (commonly referred to as Oscars) in 24 categories honoring films released in 2002.  The ceremony, televised in the United States by ABC, was produced by Gil Cates and was directed by Louis J. Horvitz.  Actor Steve Martin hosted for the second time, having previously presided over the 73rd ceremony held in 2001.  Three weeks earlier in a ceremony at Regent Beverly Wilshire Hotel in Beverly Hills, California held on March 1, the Academy Awards for Technical Achievement were presented by host Kate Hudson.

Sammy Davis Jr.: Samuel George Davis Jr. (December 8, 1925 – May 16, 1990) was an American singer, dancer, actor and comedian.  He was noted for his impressions of actors, musicians and other celebrities.  At the age of three, Davis began his career in vaudeville with his father and Will Mastin as the Will Mastin Trio, which toured nationally.  After military service, Davis returned to the trio.  Davis became an overnight sensation following a nightclub performance at Ciro's (in West Hollywood) after the 1951 Academy Awards.  With the trio, he became a recording artist.  In 1954, he lost his left eye in a car accident, and several years later, he converted to Judaism.

80th Academy Awards: The 80th Academy Awards ceremony, presented by the Academy of Motion Picture Arts and Sciences (AMPAS), honored the best films of 2007 and took on place February 24, 2008, at the Kodak Theatre in Hollywood, Los Angeles beginning at 5:30 p.m. PST / 8:30 p.m. EST.  During the ceremony, AMPAS presented Academy Awards (commonly referred to as Oscars) in 24 categories.  The ceremony was televised in the United States by ABC, and produced by Gil Cates and directed by Louis J, Horvitz.  Actor Jon Stewart hosted the show for the second time, having previously presided over the 78th ceremony held in 2006.  Two weeks earlier in a gala at the Beverly Wilshire Hotel in Beverly Hills, California held on February 9, the Academy Awards for Technical Achievement were presented by host Jessica Alba.

Supporting paragraphs: 47th Academy Awards Sammy Davis Jr.
Answer: December 8, 1925