Question: The father of Dennis Chun is best known for what role on "Hawaii Five-O?

Context paragraphs:
Douglas Mossman: Douglas Mossman, also credited as Doug Mossman, is an actor known for his recurring role as Detective Frank Kamana on the original "Hawaii Five-O" from 1974 to 1976.  He also had roles on "Hawaiian Eye" and other productions shot in Hawaii.

Harry Endo: Harry Endo (July 20, 1922 – January 9, 2009) was an American actor best known for his role playing Che Fong, a forensic scientist on the television series "Hawaii Five-O".

Claire van der Boom: Claire van der Boom (born 1983) is a Logie Award winning Australian film, television and theatre actress of Dutch ancestry.  Internationally, she is best known for her appearance as Stella in the HBO miniseries "The Pacific", and her recurring role playing the ex-wife of Det. Danny Williams in the 2010 remake of "Hawaii Five-O".

Dick DeBenedictis: Richard “Dick” DeBenedictis (born January 23, 1937) is an American composer noted for composing music for television shows including "Perry Mason" and its movies from 1985 until 1993, "Police Story", "Columbo", "Father Dowling Mysteries", "The Rockford Files", "Hawaii Five-O", "Phyllis", and "Matlock", and its spin offs "Jake and the Fatman", and "".  He is also best known for his production music that have been used in many shows, commercials, video games and films.  DeBenedictis has been nominated ten times for an Emmy Award, most recently in 1996, for his compositions.

William Sadler (actor): William Thomas Sadler (born April 13, 1950) is an American film and television actor.  His television and motion picture roles have included Lewis Burwell "Chesty" Puller in "The Pacific", in "", Sheriff Jim Valenti in "Roswell", convict Heywood in "The Shawshank Redemption", Senator Vernon Trent in "Hard To Kill", and the Grim Reaper in "Bill & Ted's Bogus Journey", a role for which he won the Saturn Award for Best Supporting Actor, and his role as Colonel Stuart opposite Bruce Willis in "Die Hard 2".  He played the character of President of the United States, Matthew Ellis, in "Iron Man 3", in "Marvel's Agents of S.H.I.E.L.D.", and in "WHIH Newsfront", and recurs as Steve McGarrett's murdered father in the latter-day 2000's remake of "Hawaii Five-O".  In 2015, Sadler had an appearance in the TV series "Z Nation".

Kam Fong Chun: Kam Fong Chun (May 27, 1918 – October 18, 2002), born Kam Tong Chun, was an American actor, best known for his role as Chin Ho Kelly, a police detective on the CBS television network series "Hawaii Five-O".

Jack Lord: John Joseph Patrick Ryan (December 30, 1920 – January 21, 1998), best known by his stage name, Jack Lord, was an American television, film and Broadway actor and director and producer.  He was known for his starring role as Steve McGarrett in the CBS television program "Hawaii Five-O", which ran from 1968 to 1980.

Herman Wedemeyer: Herman John Wedemeyer (May 20, 1924 – January 25, 1999) was an American actor, football player, and politician.  He is best known for portraying Sergeant/Detective "Duke" Lukela on the crime drama "Hawaii Five-O" (1972–1980).  However, he appeared on the first episode of Hawaii Five-O as Lt. Balta of HPD.

Al Harrington (actor): Al Harrington (born Tausau Ta'a on December 12, 1935) is an American television actor.  He is best known for his role as "Det. Ben Kokua" on the CBS television series "Hawaii Five-O" and as Mamo Kahike on the 2010 reboot of Hawaii Five-0 playing the owner of a surf shop and a bus driver in the off season.  He had previously appeared in five episodes of the series as other characters.

Dennis Chun: Dennis Chun (born March 18, 1952) is an American actor, he is the son of actor Kam Fong Chun, and best known for his role as Sgt. Duke Lukela in "Hawaii Five-0".

Supporting paragraphs: Dennis Chun Kam Fong Chun
Answer: Chin Ho Kelly