Question: On what day was the person born who wrote the screenplay for "Mr. Horn"?

Context paragraphs:
Foreign-born Japanese: A foreign-born Japanese (外国生まれの日本人 , gaikoku umare no nihonjin , literally "Japanese person born in a foreign country") is a Japanese person of foreign descent or heritage, who was born outside Japan and later acquired Japanese citizenship.  This category encompasses persons of both Japanese and non-Japanese descent.  The former subcategory is considered because of intricacies of national and international laws regarding the citizenship of newborn persons.

Edwin L. Mechem: Edwin Leard Mechem (July 2, 1912November 27, 2002) was a prominent Republican politician from New Mexico.  He served as the 15th, 17th and 19th Governor of New Mexico and represented the state in the United States Senate.  Mechem was the first person born in the 20th century to become the state's governor, as well as the first person born in New Mexico after statehood to succeed to the office.  He later served as a Federal Judge.

Martha Piper: Martha C. Piper, {'1': ", '2': ", '3': ", '4': "} was the President and Vice-Chancellor of the University of British Columbia.  She held the position from 1997 until 2006, and was the 11th person and the first woman to do so.  Having been born in Lorain, Ohio, she is also the first person born outside Canada to have held the position.  She is a Canadian citizen and she was made an officer of the Order of Canada in 2002.  Her contract with UBC stipulated a salary of $350,000 plus incentive payments of up to $50,000 per year upon meeting the performance goals set by the Board of Governors.

Mamzer: A mamzer (Hebrew: ממזר‎ ‎ ) is a person born from certain forbidden relationships, or the descendant of such a person, in the Hebrew Bible and Jewish religious law.  A "mamzer" in modern Jewish culture is someone who is either born out of adultery by a married Jewish woman and a Jewish man who is not her husband, or born out of incest (as defined by the Bible), or someone who has a "mamzer" as a parent.  Mamzer status is not synonymous with illegitimacy, since it does not include children whose mothers were unmarried.

Nabi Tajima: Nabi Tajima (田島 ナビ , Tajima Nabi , born 4 August 1900) is a Japanese supercentenarian.  At the age of , she is the world's oldest verified living person and the last surviving person born in the 19th century.  She is the oldest verified Japanese and Asian person ever.

The Legends of Doo Wop: The Legends of Doo Wop is a music group of 1950s doo-wop singers.  The original members included Jimmy Gallagher of the Passions, Tony Passalaqua of the Fascinators, Frank Mancuso of the Imaginations, and Steve Horn of the Five Sharks (died July 24th 2013).  In 2006, Passalaqua left the group and was replaced by Tommy Mara of The Crests.  Mr. Mara stopped booking The Legends of Doo Wop after the passing of Mr. Horn and the remaining Legends of Doo Wop went on to work on other projects.  Johnny Tarangelo, formerly of The Mystics and former Dion backup vocalist Tommy Moran are now part of the group, as of June 2016.

William Goldman: William Goldman (born August 12, 1931) is an American novelist, playwright, and screenwriter.  He came to prominence in the 1950s as a novelist, before turning to writing for film.  He has won two Academy Awards for his screenplays, first for the western "Butch Cassidy and the Sundance Kid" (1969) and again for "All the President's Men" (1976), about journalists who broke the Watergate scandal of President Richard Nixon.  Both films starred Robert Redford.

Les Irwin: Leslie Herbert "Les" Irwin, CBE (1 May 1898 – 28 January 1985) was an Australian politician.  Born in Newcastle, New South Wales, he was educated at state schools and underwent military service 1916–30.  Upon the end of his service, he became a bank manager.  In 1963, he was selected as the Liberal candidate for the seat of Mitchell in the Australian House of Representatives.  He was the last person born in the nineteenth century, the last person born before Federation, and the last World War I veteran elected to the House.  He held Mitchell until his defeat in 1972.  Irwin died in 1985.

Clarence Richard Silva: Clarence Richard Silva, popularly known as Larry Silva (born August 6, 1949), is a bishop of the Roman Catholic Church.  He is the fifth Bishop of Honolulu, appointed by Pope Benedict XVI on May 17, 2005, to oversee the Diocese of Honolulu.  Previous to his appointment to the epicopacy, he served as a diocesan priest and later vicar general of the Diocese of Oakland in California.  He is the first person born in Hawaii to lead the Roman Catholic community of the Hawaiian Islands.  He is also the second person of Portuguese ancestry to serve the community as its ordinary.

Mr. Horn: Mr. Horn is a 1979 television film chronicling the life of Tom Horn.  It was directed by Jack Starrett from a screenplay by William Goldman.

Supporting paragraphs: Mr. Horn William Goldman
Answer: August 12, 1931