Question: What nationality was the boxer who defeated Len Buchanan in 1972 ?

Context paragraphs:
ECUARUNARI: ECUARUNARI (in Kichwa: "Ecuador Runakunapak Rikcharimuy ", "Movement of the indigenous people of Ecuador"), also known as Confederation of Peoples of Kichwa Nationality ("Ecuador Kichwa Llaktakunapak Jatun Tantanakuy ," in Spanish "Confederación de Pueblos de la Nacionalidad Kichwa del Ecuador ") is the organization of indigenous peoples of Kichwa nationality in the Ecuadorian central mountain region, founded in 1972.

Johnny LoBianco: Giovanni "Johnny" LoBianco (October 7, 1915 – July 16, 2001) was an American boxing referee for over 30 years, who was referee for a number of championship fights, including several that ended controversially, most notably Roberto Durán's successful 1972 dethroning of Ken Buchanan in which LoBianco ruled Durán the victor by knockout despite having appeared to have hit Buchanan with a low blow.

English cricket team in Australia in 1954–55: Len Hutton captained the English cricket team in Australia in 1954–55, playing as England against Australia in the 1954-55 Ashes series and as the MCC in other matches on the tour.  It was the first time that an England team had toured Australia under a professional captain since the 1880s.  After losing the First Test by an innings, they beat Australia 3-1 and retained the Ashes.  The combination of Frank Tyson, Brian Statham, Trevor Bailey, Johnny Wardle and Bob Appleyard made it one of the strongest bowling sides to tour Australia, and it was the only team of any nationality to defeat Australia at home between 1932-33 and 1970-71.

Len Johnson (boxer): Leonard "Len" Benker Johnson (22 October 1902 – 28 September 1974 (aged 71)) born in Clayton, Manchester was an English professional middle/light heavyweight boxer of the 1920s, and 1930s, who won the Australian version of the British Empire middleweight title in 1926.  Johnson (who was of mixed race) was denied the opportunity to fight for championships in Great Britain because of the colour bar that existed in boxing at that time.  He was managed by his father Bill Johnson.  Johnson fought on boxing booths in the 1920s, and from 1930 to 1939 owned his own travelling booth.  Just prior to the outbreak of World War Two Johnson briefly tried his hand at professional wrestling, but once war came he lost interest in both boxing and wrestling, and sold his booth.  During World War Two Johnson was a member of the Civil Defence heavy Rescue Squad in Manchester.  Len Johnson was also a member of the Communist Party of Great Britain (joining the party in 1944 and later writing a boxing column for the party newspaper "The Daily Worker"), a trade unionist, a community leader in Moss Side, a local civil rights activist, and attended the 5th Pan-African Congress in Manchester.  Following the Second World War, he was a co-founder of the New International Society in Manchester, which provided a vehicle for black political and social self-organisation in the city and campaigning against racism at home and abroad, including organising a concert and a rally featuring Paul Robeson in support of the Trenton Six, which were both attended by 10,000 people.

1975 Kansas City Chiefs season: The 1975 Kansas City Chiefs season ended with a second consecutive 5–9 record and no playoff berth.  San Francisco 49ers defensive coordinator Paul Wiggin was named the second head coach in franchise history on January 23.  A former Pro Bowl defensive end for the Cleveland Browns, Wiggin inherited the unenviable task of rebuilding a squad whose pool of talent had been largely depleted due to age and a number of ill-fated trades that had left the club devoid of first-round draft choices in 1973 and 1975.  After an 0–3 start to the season, Wiggin directed the Chiefs to three straight wins, beginning with a convincing 42–10 victory against the Raiders on October 12.  The highlight of the season was a 34–31 upset win at Dallas on "Monday Night Football".  The club could not maintain the early success; Owning a 5–5 record heading into the homestretch of the season, injuries to a number of key players crippled the team.  The team dropped its final four contests of the year to finish at 5–9 for the second consecutive season.  The regular season finale at Oakland marked the final games in the Hall of Fame careers of Len Dawson and Buck Buchanan.

Alex Buchanan (politician): Alexander Andrew Buchanan (4 October 1905 – 10 September 1985) was an Australian politician.  Born in Melbourne, he was educated there at Scotch College and then at the University of Melbourne.  He became a manager and a manufacturing and wholesale merchant before serving in the military 1942–43.  He returned to become a farmer at Beaconsfield and an organiser of the Liberal Party in Victoria.  In 1955, he was elected to the Australian House of Representatives as the Liberal member for McMillan.  He held the seat until 1972, when he lost his Liberal Party endorsement and unsuccessfully contested the seat as an independent.  His preferences were instrumental in the victory of the Country Party candidate in that year.  Buchanan died in 1985.

Thomas W. Hayes: Thomas W. Hayes was the 28th California State Treasurer.  A Republican, he was nominated by Governor George Deukmejian to fill the vacancy created by the August 4, 1987 death of Democrat Jesse M. Unruh.  He took office in 1989, upon confirmation by both houses of the California Legislature.  He was Governor Deukmejian's second nominee; the first, Congressman Dan Lungren, had been refused confirmation by the State Senate.  In 1990, he won the Republican nomination for election to a term as state treasurer in his own right, defeating former Treasurer of the United States Angela "Bay" Buchanan (sister of Patrick J. Buchanan), but was defeated in the general election by Democrat Kathleen Brown.

1969 Kansas City Chiefs season: The 1969 Kansas City Chiefs season was the team's 10th, their 7th in Kansas City, and also their final season in the American Football League.  It resulted in an 11–3 record and a 23–7 victory in Super Bowl IV over the NFL's heavily favored Minnesota Vikings.  The team beat their rivals, the Oakland Raiders in the final AFL Championship Game, claiming their third AFL Championship in franchise history.  The Chiefs were coached by Hank Stram, led by quarterback Len Dawson and a powerful defense led by Bobby Bell, Willie "Contact" Lanier, Buck Buchanan and Curley Culp.  The Chiefs' defense became the fourth defense in the history of pro football to lead its league in fewest rushing yards, fewest passing yards and fewest total yards.  The Chiefs were the second AFL team to win the Super Bowl and last AFL team to do so before the AFL-NFL Merger in the following season.

Roberto Durán: Roberto Durán Samaniego (born June 16, 1951) is a Panamanian former professional boxer who competed from 1968 to 2001.  Durán was a versatile brawler and in-fighter in the ring, which earned him the nickname of ""Manos de Piedra"" ("Hands of Stone") for his devastating punching power.  He is a four-weight world champion, having held titles at lightweight (1972–1979), welterweight (1980), light middleweight (1983–1984), and middleweight (1989), as well as reigns as the undisputed and lineal lightweight champion (1978–1979), and the lineal welterweight champion (1980).  He is also the second boxer to have competed over a span of five decades, the first being Jack Johnson.

2004–05 LEN Euroleague: The 2004–05 LEN Euroleague was the 42nd edition of LEN's premier competition for men's water polo clubs.  It ran from 29 September 2004 to 21 May 2005, and it was contested by thirty five teams from fifteen countries.  CN Posillipo defeated defending champion Budapest Honvéd in the final to win its third title, while Pro Recco was third and Jug Dubrovnik fourth.

Supporting paragraphs: Johnny LoBianco Roberto Durán
Answer: Panamanian