Question: Which of the boxers that Howard Davis Jr. beat stopped boxing in 1995?

Context paragraphs:
The Culture of Building: The Culture of Building (Oxford University Press) is a 2006 book by Howard Davis, a professor of architecture at the University of Oregon.  It describes how buildings throughout the ages and varied settings are products of a building culture - the "coordinated system of knowledge, rules, procedures, and habit that surrounds the building process in a given place and time".  Davis suggests that this culture is a cross-global phenomenon in which thousands of buildings are produced through shared and predictable methods of working.

Howard Davis (musician): Howard Davis (9 April 1940 – 5 February 2008) was a British violinist, best known as the leader for more than 35 years of the Alberni Quartet.  He was greatly respected both as a refined player and as an inspirational and influential teacher.  He was a student at the Royal Academy of Music in London from 1958 to 1963 and became professor of violin in 1982.

Billy Davis Jr.: Billy Davis Jr. (born June 26, 1938 in St. Louis, Missouri) is an American musician, best known as a member of the 5th Dimension.  Along with his wife, Marilyn McCoo, he had hit records during 1976 and 1977 with "I Hope We Get to Love in Time", "Your Love", and "You Don't Have to Be a Star (To Be in My Show)".  Davis and McCoo were married in 1969.  They became the first African American married couple to host a network television series, "The Marilyn McCoo & Billy Davis Jr.  Show", on CBS in Summer 1977.  That same year, "You Don't Have to Be a Star (To Be in My Show)" won a Grammy Award.

Howard Davis Jr.: Howard Edward Davis Jr. (February 14, 1956 – December 30, 2015) was an American amateur and professional boxer.  Growing up on Long Island as the eldest of 10 children, Davis first learned boxing from his father.  After being inspired by a movie about Muhammad Ali, Davis embarked on his amateur career.  He won the 1976 Olympic gold medal one week after his mother died.  He was also awarded the Val Barker Trophy at the Olympics, beating out such boxers as Sugar Ray Leonard, Michael Spinks and Leon Spinks.

Eddie Ndukwu: Eddie Ndukwu ( (1950--) 01 1950 (age (2017)-(1950)-((11)<(06)or(11)==(06)and(30)<(01)) ) ) is a Nigerian amateur and professional bantam/super bantam/featherweight boxer of the 1960s, '70s and '80s who as an amateur won the gold medal at bantamweight in the Boxing at the 1966 British Empire and Commonwealth Games in Kingston, Jamaica, won the silver medal at featherweight at the 1973 All-Africa Games, won the featherweight class at the 1974 British Commonwealth Games, and represented Nigeria in the 1974 World Amateur Boxing Championships losing to eventual gold medal winner Howard Davis, Jr. of the United States.  As a professional, he won the Nigerian Featherweight title, and Commonwealth featherweight title, his professional fighting weight varied from 118 lb , i.e. bantamweight to 124+3/4 lb , i.e. featherweight.

Allan Davis (cyclist): Allan Howard Davis (born 27 July 1980) is an Australian former professional road racing cyclist, who last rode for UCI ProTour team .  Born in Ipswich, Queensland, Davis resides in Bundaberg, Queensland and in Spain.  Known for his sprinting ability, he started competitive cycling at the age of 10, and turned professional in 2002.  He is also the brother of fellow cyclist, Scott Davis, and was an Australian Institute of Sport scholarship holder.

Evans Blue (album): Evans Blue is the third studio album by Canadian rock band Evans Blue.  It is the first to feature new singer Dan Chandler and the last to feature drummer Howard Davis.

Leon Spinks: Leon Spinks (born July 11, 1953) is an American former professional boxer who competed from 1977 to 1995.  In only his eighth professional fight, he won the undisputed heavyweight championship in 1978 after defeating Muhammad Ali via split decision, in what was considered one of the biggest upsets in boxing history.  Spinks was later stripped of the WBC title for facing Ali in an unapproved rematch seven months later, which he lost by unanimous decision.

Ace Rusevski: Ace Rusevski (born November 30, 1956, in Kumanovo, SFR Yugoslavia, now Republic of Macedonia) is a retired Macedonian boxer, who represented Yugoslavia at the 1976 Summer Olympics in Montreal, Canada.  There he won the bronze medal in the lightweight division (– 60 kg) after being defeated in the semifinals by eventual gold medalist Howard Davis Jr. of the United States.

The Sammy Davis Jr. All-Star Spectacular: The Sammy Davis Jr.  All-Star Spectacular is a 1962 studio album by Sammy Davis Jr. arranged by Morty Stevens.  The first half of the album features Davis' impersonations of popular entertainers and celebrities.

Supporting paragraphs: Howard Davis Jr. Leon Spinks
Answer: Leon Spinks