Question: John J. Phelan Jr was head of the NYSE during what October, 1987 event?

Context paragraphs:
MacInnes Student Ice Arena: John J. MacInnes Student Ice Arena is a 4,200-capacity hockey arena in Houghton, Michigan.  It is home to the Michigan Tech Huskies men's ice hockey team.  It is named for John J. MacInnes, head coach of the Huskies from 1956 to 1983, who was one of the most successful coaches in the history of college hockey with a record of 555-295-39.

John J. McKetta: John J. McKetta Jr. (born October 17, 1915) is an American chemical engineer known for his research on more efficient ways to create energy and the thermodynamic properties of hydrocarbons.  Born in Wyano, Pennsylvania, he obtained his BSE, MS, and PhD degrees from the University of Michigan.  He joined the faculty of the chemical engineering department of the University of Texas in 1946, later serving as department chair, dean of the UT College of Engineering, and vice chancellor of the UT System.  He served as energy advisor to Presidents Richard Nixon, Gerald Ford, Ronald Reagan, and George H. W. Bush.  He published over 400 papers and wrote or edited 87 books, including the 69-volume "Encyclopedia of Chemical Processing and Design".  He was elected to the National Academy of Engineering and, in 2009, was selected by the American Institute of Chemical Engineers as one of the "50 Chemical Engineers of the Foundation Age."  He also served as president of AIChE in 1962.  In 2012 the University of Texas renamed his department as the John J. McKetta Jr.  Department of Chemical Engineering.  As a published author, he is widely held in libraries worldwide.  He turned 100 in October 2015.

John J. Pershing General of the Armies: John J. Pershing General of the Armies, is a public artwork by American artist Robert White, located at Pershing Park in Washington, D.C., United States.  John J. Pershing General of the Armies was originally surveyed as part of the Smithsonian's Save Outdoor Sculpture!  survey in 1994.  The monument is a tribute to United States Army general John J. Pershing.

Black Monday (1987): In finance, Black Monday refers to Monday, October 19, 1987, when stock markets around the world crashed, shedding a huge value in a very short time.  The crash began in Hong Kong and spread west to Europe, hitting the United States after other markets had already declined by a significant margin.  The Dow Jones Industrial Average (DJIA) fell exactly 508 points to 1,738.74 (22.61%).  In Australia and New Zealand, the 1987 crash is also referred to as "Black Tuesday" because of the time zone difference.

John J. Phelan Jr.: John Joseph Phelan Jr. (May 7, 1931 – August 4, 2012) was an American financier who served as president and later chairman and chief executive of the New York Stock Exchange, where he introduced computerized trading technology.  Phelan's leadership tenure at the NYSE included the 1987 stock market crash stock market crash, during which he declined to halt trading.  Phelan's calm and confident manner was widely praised.  After the crash, Phelan helped to implement trading curbs also known as "circuit breakers" to help prevent rapid stock selloffs in the future.

Pınarcık massacre: The Pinarcik Massacre is the name given to a 20 June 1987 event in which 30 Kurdish civilians were killed in the village of Pınarcık, in the Mardin Province of Turkey.  The dead consisted of eight village guards, sixteen children and eight women.  The attack was carried out by the PKK because residents of the village had enlisted in the village guard militia.

Edna Brady Cornwell: Edna Brady Cornwell (1868–1958) was the wife of former Governor of West Virginia John J. Cornwell and served as that state's First Lady, 1917-1921.  She was born May 26, 1868, at Romney, West Virginia.  In 1891 she married John J. Cornwell, publisher of the "Hampshire Review".  As first lady, she hosted social gatherings and participated in Charleston civic affairs.  After leaving office, the Cornwells returned to Romney, West Virginia.  After Gov. Cornwell died in 1953, Edna Cornwell continued as publisher of the "Hampshire Review" until her death on December 1, 1958.

Emil Lewis Holmdahl: Emil Lewis Holmdahl (August 26, 1883 – April 8, 1963) was a machine gunner, soldier of fortune, spy, gun runner, and treasure hunter who fought under John J. Pershing in the Spanish–American War in the Philippines, under Lee Christmas in Central America, under Francisco Madero, Pancho Villa, and Venustiano Carranza in the Mexican Revolution, and under John J. Pershing in World War I.  In 1926, Holmdahl was accused of having stolen Francisco Pancho Villa's head.

Jack Phelan (basketball, born 1954): John "Jack" Phelan (born June 14, 1954) is an American former college basketball coach.  He served as the University of Hartford's men's head coach from 1981 to 1992 and compiled an overall record of 128–181.  Phelan oversaw the transition of the program from a NCAA Division II program into Division I.  His previous coaching stops included Niagara University, Saint Francis University, and Fairfield University.

William Kennedy (author): William Joseph Kennedy (born January 16, 1928) is an American writer and journalist born and raised in Albany, New York, the son of William J. Kennedy and to Mary E. McDonald.  Kennedy was raised a Catholic.  Many of his novels feature the interactions of members of the fictional Irish-American Phelan family and make use of incidents of Albany's history and the supernatural.  Kennedy's works include "The Ink Truck" (1969), "Legs" (1975), "Billy Phelan's Greatest Game" (1978), "Ironweed" (1983, winner of the 1984 Pulitzer Prize for Fiction; movie, 1987), and "Roscoe" (2002).  In 2011, he published "Changó's Beads and Two-Tone Shoes", which one reviewer called a book "written with such brio and encompassing humanity that it may well deserve to be called the best of the bunch".

Supporting paragraphs: John J. Phelan Jr. Black Monday (1987)
Answer: Black Monday