article_snippet.sent: The attack  in Crumpsall, Manchester, came after a heated argument over the couple's lack of children - with  
article_snippet.sent: (That) evening, the atmosphere became more argumentative.
article_snippet.sent: As the argument developed, the exchanges became heated.
article_snippet.sent: The attack in Crumpsall, Manchester, came after a heated argument over the couple's lack of children .