Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Police have released footage of the shocking moment a husband confessed to losing control and stabbing his estranged British wife to death just moments after he killed her. Christopher Cullen, 51, who was yesterday found guilty of murdering Victoria Comrie Cullen, is seen emerging from the mangroves at Taren Point in Sydney - just metres from where the mother of his three children lay dead. Slumped against a pole wrapped in a foil blanket, Cullen is almost unrecognisable because he was suffering from multiple stab wounds including a punctured lung which had pushed the air to to his facial skin - swelling his eyes so much that he could barely see.Footage released of Christopher Cullen's arrest just after his wife's murderHe lay slumped with swollen eyes from punctured lung pushing air to faceJury took just a day of deliberation for the 51-year-old to be found guiltySupporters of his estranged wife Victoria Comrie Cullen cried with joyMother of his three children was found dead at Taren Point, south Sydney 
 Question:The detectives immediately started firing questions at _ - beginning with asking if he knew he was under arrest for the murder of his wife to which he simply replied: 'Yes'.

Christopher Cullen