question: What professional boxer, who held the British heavyweight title twice, did Mike Tyson box? 
answer: Danny Williams
context: Title: Crawford Ashley
  Passage: Crawford "Chilling" Ashley (born Gary Crawford, 20 May 1964 in Leeds is an English professional super middle/light heavy/cruiser/heavyweight boxer of the 1980s, '90s and 2000s, who won the British Boxing Board of Control (BBBofC) Central Area light heavyweight title, BBBofC British light heavyweight title, European Boxing Union (EBU) light heavyweight title (twice), and Commonwealth light heavyweight title (twice), drew with Yawe Davis for the vacant European Boxing Union (EBU) light heavyweight title, and was a challenger for the European Boxing Union (EBU) light heavyweight title against Graciano Rocchigiani, World Boxing Association (WBA) World super middleweight title against Michael Nunn, World Boxing Association (WBA) World light heavyweight title against Virgil Hill, and World Boxing Union (WBU) cruiserweight title against Sebastiaan Rothmann, his professional fighting weight varied from 163 lb , i.e. super middleweight to 211 lb , i.e. heavyweight.
  Title: Danny Williams (boxer)
  Passage: Daniel Peter "Danny" Williams (born 13 July 1973) is a British professional boxer.  A veteran of the sport since 1995, he held the British heavyweight title twice between 2000 and 2010, and the Commonwealth heavyweight title twice between 1999 and 2006.  Williams is best known for scoring an upset knockout victory against Mike Tyson in 2004, which earned him a mandatory WBC heavyweight title opportunity.  In the same year, he challenged then-reigning champion Vitali Klitschko, but was stopped in eight rounds.
  Title: Matthew Curran
  Passage: Petty officer Matthew 'Nutty' Curran (1882–1938 (aged 56)) born in Lisdeen, Kilkee was an Irish professional cruiser/heavyweight boxer of the 1900s, '10s and '20s, who won the Irish heavyweight title, British heavyweight title (as this bout didn't take place at National Sporting Club premises at 43 King Street, Covent Garden, London, this and subsequent British heavyweight title bouts featuring Matthew 'Nutty' Curran were not recognised by the National Sporting Club (NSC), nor retrospectively by the British Boxing Board of Control), and British Empire heavyweight title, and challenged for the British Boxing Board of Control British heavyweight title, his professional fighting weight varied from 178 lb , i.e. Cruiserweight to 199 lb , i.e. Heavyweight.  Matthew Curran's nickname of 'Nutty' came about because "he would foul you early on or he went so crazy that he railroaded you into fouling him", 'Nutty' being slang for a crazy person, i.e. one who suffers from insanity.
  Title: Mike Tyson vs. Danny Williams
  Passage: Mike Tyson vs. Danny Williams, billed as "Return for Revenge", was a professional boxing match contested on July 30, 2004.  Although former heavyweight champion Tyson entered the fray as a 9-to-1 favorite with oddsmakers, the fight was won by Williams by knock out at 2:51 of the 4th round.
  Title: Garry Delaney
  Passage: Gary Delaney ( (1970--) 12 1970 (age (2017)-(1970)-((11)<(08)or(11)==(08)and(30)<(12)) ) ) born in Newham is an English professional light heavy/cruiser/heavyweight boxer of the 1990s and 2000s.  He won the British Boxing Board of Control (BBBofC) Southern Area light heavyweight title, World Boxing Board (WBB) light heavyweight title, World Boxing Organization (WBO) Inter-Continental light heavyweight title, BBBofC Southern Area cruiserweight title, and Commonwealth light heavyweight title (twice), and was a challenger for the BBBofC British heavyweight title, and Commonwealth heavyweight title against Julius Francis, World Boxing Organization (WBO) Inter-Continental cruiserweight title against John Keeton, and Jesper Kristiansen, BBBofC British cruiserweight title, and Commonwealth (British Empire) cruiserweight title against Bruce Scott, and World Boxing Union cruiserweight title against Sebastiaan Rothmann, and Enzo Maccarinelli, his professional fighting weight varied from 174 lb , i.e. light heavyweight to 231 lb , i.e. heavyweight.
citations: Mike Tyson vs. Danny Williams Danny Williams (boxer)