Question: What is the birthdate of this Iraqi-British architect, who designed 520 West 28th Street?

Context paragraphs:
520 West 28th Street: 520 West 28th Street, also known as the Zaha Hadid Building, is located in New York City.  Designed by the architect Zaha Hadid, the building was her first residential building in New York and one of her last projects before her death.  The building is located along the High Line.  The building is set to have four art galleries located at street level.  The building also has a sculpture platform with art curated by Friends of the High Line.

Heydar Aliyev Center: The Heydar Aliyev Center is a 619000 sqft building complex in Baku, Azerbaijan designed by Iraqi-British architect Zaha Hadid and noted for its distinctive architecture and flowing, curved style that eschews sharp angles.  The center is named after Heydar Aliyev, the first secretary of Soviet Azerbaijan from 1969 to 1982, and president of Azerbaijan Republic from October 1993 to October 2003.

Baudouine Building: The Baudouine Building is a historic building located at 1181-1183 Broadway at the corner of West 28th Street in the NoMad neighborhood of Manhattan, New York City.  It was built from 1895-96 as an office tower with street level store, replacing a hotel that had previously stood on the site, and was designed by Alfred Zucker in the Classical Revival style.

Dan the Dude: Dan Mulcahy (fl.  c. 1905-15), known by the psudonyms of Louis Harris and Dan the Dude, was a New York criminal and the longtime owner of the Stag Cafe at 28 West 28th Street, in the vice district of Satan's Circus.  The cafe was a popular hangout for many of the criminals in New York's underworld.  Dan was most noted as a fixer and confidante of New York's numerous con men, many of whom came from out of town and used his establishment as their unofficial base.  "In olden times [around 1910-1915] in Dan the Dude's place," it was said, ""you could see a hundred con men there at once, and not one of them would be a native New Yorker.""

Everard Baths: The Everard Baths or Everard Spa Turkish Bathhouse was a gay bathhouse at 28 West 28th Street in New York City that operated from 1888 to 1986.  The venue occupied an adaptively reused church building and was the site of a deadly fire.

Oklahoma County Courthouse: Oklahoma County Courthouse in Oklahoma County, Oklahoma was designed by prominent Oklahoma architect Solomon Layton and partners George Forsyth and Jewel Hicks of the firm Layton & Forsyth, and was built in 1937.  It replaced the original courthouse that was built with $100,000 in bonds issued and located at the intersection of California and Robinson at 520 West Main Street in the 1900s.

Tin Pan Alley: Tin Pan Alley is the name given to the collection of New York City music publishers and songwriters who dominated the popular music of the United States in the late 19th century and early 20th century.  The name originally referred to a specific place: West 28th Street between Fifth and Sixth Avenues in Manhattan, and a plaque exists (see below) on the sidewalk on 28th Street between Broadway and Sixth commemorates it.

Zaha Hadid: Dame Zaha Mohammad Hadid (Arabic: زها حديد‎ ‎ "Zahā Ḥadīd"; 31 October 1950 – 31 March 2016) was an Iraqi-British architect.

Fifth Avenue Theatre: Fifth Avenue Theatre was a Broadway theatre in New York City in the United States located at 31 West 28th Street and Broadway (1185 Broadway).  It was demolished in 1939.

Daisy Bates House: The Daisy Bates House is a historic house at 1207 West 28th Street in Little Rock, Arkansas.  It is significant as the home of Arkansas NAACP president Daisy Bates, and for its use as a command post for those working to desegregrate the Little Rock Central High School during the desegregation crisis of 1957–1958.  It was a sanctuary for the nine students involved.  It was declared a National Historic Landmark in 2001.

Supporting paragraphs: 520 West 28th Street Zaha Hadid
Answer: 31 October 1950